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How did I get here? Part 2 – The Indirect and Complicated Route to PADI Discover Scuba Diving in The Philippines

July 31, 2015 By Dive With Mia

Last week, inspired by some people asking me about my life and how I ended up where I am today, I posted my initial feature entitled:  How did I get here?  The Indirect and Complicated Route to Scuba Diving Happiness – Part 1.   At the moment, I am spending time in the Turks and Caicos Islands while starting my own Truli Wetsuits business in Canada and almost every time I meet a tourist, they ask:  ”So, how did you end up in Turks and Caicos?”  There is a simple answer (I accepted a job offer as Purser on the scuba liveaboard Turks and Caicos Explorer II), but there’s also a way more interesting and convoluted answer which I’m having a lot of fun writing about.  In my last post, I ended with me taking a job as an English Teacher in Tokyo, Japan upon graduating from university in Canada and now I will continue to tell my story of finding a way to try scuba diving and adventure on my first backpacker’s trip to The Philippines…

Now that I was unleashed on the big wide world as a Truli independent adult, I was determined to follow my passions and do what I had always wanted to do.  1.  I wanted to travel and explore.  2.  I wanted to try scuba diving.  After working 6 months at the language school I was entitled to some vacation days.  All the teachers would talk about their amazing adventures in Thailand and rave about the lovely culture, food, and fantastic shopping, but I didn’t want to do what everyone else was doing already.  There was this free magazine for foreigners in Tokyo and there was a page that advertised all of the prices for travel and I noticed that the Philippines was pretty much the same airfare as Thailand.  I decided I wanted to go to the Philippines.  I went to the international bookstore and bought the Lonely Planet guidebook to the Philippines as well as  the Frommer’s guide to South East Asia and started to study where was the best place to go scuba diving.  Although the most famous places for scuba diving were advertised as Cebu Island and Boracay, I fell in love when I read about the island of Palawan in the south west side of the country.  The guide book described this place as “The Last Frontier”.  I booked my flight from Tokyo to Manila and then straight to Puerto Princesa on Palawan and back.  I was feeling pretty nervous about this big adventure all on my own, but it was what I had always wanted and I felt like I finally had the opportunity to do something amazing and bold and I did not want to let that pass me by.  But luckily for me, I think my enthusiasm inspired some excitement in my co-worker because just at the last minute she decided to join me on my trip!  I was stoked!

People had warned me about Manila being super dangerous and I was quite anxious considering I didn’t really know what I was doing.  I had booked one night in a little hostel near the airport before we flew the next day to the island, but we needed to call and confirm when we got there.  But neither of us had any money or coins for the phone.  We were standing by the phone trying to figure out what to do when a man who looked like he was in the military (they were all over the airport) and with a very large gun walked over to us.  He generously offered us his phone card so we could use the phone.  This was the first of hundreds of positive cross cultural encounters I would make in my life.  Although I was still on edge of my new surroundings, the kindness of the “scary” stranger breathed some life and confidence into me as we hopped into a taxi to head to the hotel.

That's Mia snorkelling for the first time off a boat in The Philippines!

Palawan, The Philippines

Over the next week we took a Jeepney across the island, which fell off the road at one point.  We paid some local guys to travel even further up island by water.  They caught us some fish and put us up in a hut on a deserted island with no electricity.  But more importantly, they lent me a scuba mask.  This was the first time in my life that I swam in an ocean and looked beneath the surface to see the colourful wildlife below.  I remember being absolutely enthralled.  It’s interesting to think back to that moment and wonder if it relates to how much I love introducing people to scuba diving.  I love that I am the one that gives others the opportunity to see all the amazing things below the surface of water.

Our final destination was El Nido, which is on the northern tip of Palawan.  We arrived by boat and I faintly remember a light drizzle with rainbows as we arrived with a back drop of tall craggy cliffs jutting out of the ocean amongst the multitude of blue hues of the sea.  We immediately signed up for a PADI Discover Scuba Diving course for first thing the next day.  I was so elated that not only was I going to get to try scuba diving, but it was going to happen in this exotic little village in the South Pacific!  The next morning we went to the dive shop and travelled by boat to a secluded white sandy beach on some island.  There were three of us girls and one instructor.  Besides my friend and I, the other woman was a Filipino from Manila who, much to my surprise, had never tried scuba diving.  She told us her brothers were all instructors and she loved the water, but just never had the chance to go.  I could totally relate, but couldn’t believe with all the beautiful waters that surround her country that she could wait

That wetsuit is exactly the reason I decided to design my own Truli Wetsuit line!

El Nido, Palawan, The Philippines

so long!  Our instructor made us some lunch and then briefed us on the skills and dive we were about to do.  We walked across the white sandy beach and into the ocean to do our “pool skills” and then we swam off together!  I felt like a natural and was so excited to see a black and white sea snake!  It looked so amazing as it slithered through the water column.  I don’t think in all the diving I’ve done since then that I’ve seen anything like that again.  So that was the day that opened a whole new world to me and started a journey that has taken me to where I am today!

We desperately wanted to stay longer in the village and do more scuba diving, but alas, I had very responsibly booked a return flight from the town all the way at the southern end of the island and needed another day of travel to get back there, so off we went.  As soon as we got back to Tokyo, I was on a mission to figure out how to become a certified PADI Open Water diver as soon as possible, which you can read about in my next blog post!

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How did I get here? Part 1 – The Indirect and Complicated Route to Scuba Diving Happiness

July 21, 2015 By Dive With Mia

I went out for a drink last week with some people who we had become friends with over on Long Bay Beach on Providenciales, Turks and Caicos Islands.  We

Long Bay Beach, Provo, Turks and Caicos Islands

Long Bay Beach, Provo, Turks and Caicos Islands

spend a large portion of our days over there escaping the relentless heat of our non-air conditioned house in the heat of July in the Caribbean.  There you can always find some relief from the heat via the wind or a dip in the ocean.  It’s only a 1 minute drive away.  The beach has become famous for kiteboarding and most tourists visit at least once, fall in love with the soft sand, shallow calm waters, and decide to return again and again.  After some casual chats about life on the island and about the Truli Wetsuits business I am starting up, this tourist began to probe me with questions about how I got to be where I was today.  I realized that I have answered those questions quite a few times over the years and as time passes the stories seem to get more and more interesting.  Life is not a smooth ride, but my determination to combine work with my passions has taken me all over the world and has challenged me in ways I never thought possible.  I’m addicted to those challenges!  And so it began…

Did you ever want something as a child that you weren’t able to have that followed you into adulthood?  That was how scuba diving was with me.

I remember being a kid and wanting to learn to scuba dive so badly, but was never allowed to due to the cost it would entail especially if all 3 of us kids were to learn.  Growing up in Canada we had the good fortune of spending summers at my grandmother’s cottage on a lovely clear lake where I learned the expression:  “water-logged”.  We swam in the lake, went fishing, canoeing, water-skiing, and even sailing.  I loved to gaze into the water and imagine what was below.  My curiosity was endless when it came to what lay beneath the surface of the water.

As I grew older, I often looked into things like scuba clubs, but while at university, I had other priorities that put the scuba diving on the backburner again and again.  Instead I focused on non-profits and began my volunteer experience as the Trip Coordinator with Habitat for Humanity.  I learned about leadership, fundraising, and having fun while doing something meaningful and it finally started to lead me on some unforgettable international adventures to builds in Jamaica and Costa Rica.  Upon graduation from Wilfrid Laurier University at the age of 22 and with a Bachelor’s Degree in English Language & Literature as well as a minor in Development & International Studies, I packed up my bags for a dream-come-true-first-real-job adventure in the vast metropolis of Tokyo, Japan.  I was a brand spanking new English Teacher at a conversational school in a city of 13 million or so people who spoke a language I knew nothing about.  I had never even eaten sushi before or been on an airplane beyond Costa Rica.  I’ll never forget how I felt when my dad dropped me off at the airport in Toronto for my flight to Tokyo.  I had no idea what I was doing having never been to an airport by myself before let alone travelling across the world alone for a new job.

As strange as it might seem, Tokyo, Japan is where my scuba life began!

In my next blog post, I will write about the first time I tried scuba diving while on my first backpackers trip to the Philippines!

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Have You Ever Seen These Crazy Scuba Dive Entries?

May 19, 2015 By Dive With Mia

As many of you know I was working on the Explorer Ventures scuba dive liveaboard in the Turks and Caicos Islands in 2014-2015 and if you haven’t already done so (or know so), scuba liveaboards are the way to go in the world of scuba diving!  The Turks and Caicos Explorer II is a 125ft vessel that hosts a maximum of 20 scuba divers on 1 week trips where they eat, sleep, and scuba dive 5 times a day.  My job as both Dive Instructor and Purser on the ship was to assist divers in and out of the water 5 times a day (among a zillion other things!).

I did the math the other day and determined that on average, I assisted with and witnessed 540 boat dive entries a week (27 dives/week x 20 divers).   I also worked blocks of 12 weeks in a row, which equals 6 480 scuba dive entries every 3 month period!  On that note, I would like to declare myself an expert in the field of scuba dive entries!

You may think that entering the water from a boat as a scuba diver is pretty straight forward; however, I would like to admit that I have seen some pretty interesting and non-traditional entries on a regular basis.  In this blog I’ve decided to outline the most common types of entries as well as the ones that make me laugh on a daily basis.  Have I mentioned I love my job?

Perhaps a mini-briefing on scuba dive entries before I dive right in to the good stuff, which will be a great refresher for those who haven’t been in the water for awhile.  Depending on the type of boat you are using there are a variety of methods to get into the water and enjoy your dive.  Always inquire from your divemaster and/or captain as to the method that is used for each vessel.  During the PADI Open Water course you learn two types and possibly others depending on the region or conditions you are learning in.  One is called the Controlled Seated Entry, where you are sitting geared up on the edge of a platform (like a dock or edge of a boat) with your fins on your feet as they dangle in the water.  Then you twist your body to one side and place both hands on the edge next to you.  After that you simply need to continue to turn your body as you push away from the platform.  Although we teach this method and, in my opinion, it seems like a safe and easy method of entry, I can’t say I’ve really seen anyone use it outside of the training.  Not sure why…

The other method of entry we teach in the course and is the most common scuba dive entry I’ve seen, is called the Giant Stride Entry.  With all of your gear on, including fins, mask and regulator in your mouth, you take the palm of your hand (usually the right hand) and put it on your regulator while your fingers are on your mask.  This helps hold them in place when you hit the water.  Your other hand can do one of three things depending on you and your situation.  Originally you were told to hold the buckle of your weight belt, to avoid it from opening upon impact with the water.  But these days, most people are using integrated weights, so it isn’t necessary.  Instead,  what many of those divers do is gather their console and alternate and hold those with their other hand.  This avoids the potential for a dangling hose to be caught on something on the boat while you are dropping into the water.  The third option is what I recommend as I see masks slipping off all the time.  You should take your other hand and hold the back of your mask strap so it doesn’t slip off and you lose your mask once you hit the water.

Okay, so we’ve got one hand holding your regulator and mask in place and the other holding the back of your mask strap (or your weight belt, or your gauge), now you need to look straight out towards the horizon (try not to look down once you have checked that the area is clear).  When you are ready, you just need to take a step and you will have completed the Giant Stride Entry!  We tend to move in the direction we are looking, so by looking out at the horizon, you will step far enough away from the boat not to hit the back of your tank on the boat.  Don’t forget to signal to the boat that you are okay by putting your fist on your head or giving the okay sign with your hand.

This is a fantastic example of a Giant Stride Entry off of the Turks and Caicos Explorer II in 2014.

A perfect example of a Giant Stride Entry

West Caicos, Turks and Caicos Islands

Okay, so now you know the standard, but what I really wanted to talk about here today are the out of the ordinary, extraordinary, where-did-they-come-up-with-that-technique, styles that I have put into 4 categories.  I’m not sure where these have evolved from, but I think they are ultimately the result of each scuba diver’s unique individual style…or lack of coordination!  Either way, they have provided me with an endless amount of amusement throughout my days on the boat!  For each scuba dive entry, I will rate it with a Splash Factor between 1 (not much splash) and 5 (big splash!).

The Torpedo

The first scuba dive entry I’d like to talk about is my favourite.  According to The Torpedo-ites, this style seems to have come about due to scuba diving in locations that have a significant drop between the platform and the water and/or a negative entry was required.  To perform this entry, the scuba diver approaches his exit point, steps off the platform and brings both feet together in one smooth action resulting in a streamlined entry like a torpedo plummeting straight into the water.  This tends to be a very clean and tidy entry with no flailing arms and dangling gear.  The Splash Factor is a 2!

This scuba dive entry is neat and tidy! They enter the water just like a torpedo!

West Caicos, Turks and Caicos Islands

In a Guitar Hero's mind, this is how he thinks he looks!

Photo taken from the Air Guitar World Championships

Guitar Hero

This type of scuba dive entry is super fun.  I’ve only ever seen men do it and it is reminiscent of those guys in your life who totally wish they were rock stars.  You know the types – they are the ones who are playing the air guitar like there’s no tomorrow.  Technically speaking, they are performing The Giant Stride Entry just as it says to do in the text book, but these guys have simply added some style.  They lift their leg just a little bit higher and reach for the stars as they leap from the vessel probably with some rockin’ AC/DC or Dire Straits internal playlist happening in their heads.  I’ll never forget the first one I ever saw by Mike Swisher and then more recently from Tim Tetlow!  Rock On Scuba Divers!!!  The Splash Factor is a 3!

Tim Tetlow - a true scuba diving Guitar Hero!

West Caicos, Turks and Caicos Islands

Froggy

This is one of those scuba dive entries that is so strange and unusual that the first time I ever saw it, I thought it was one of those once in a lifetime happenings.  I remember genuinely enjoying the show and shaking my head in wonder at all the funtastic things I get to see in my job.  But low and behold, The Froggy seems to be some strange, but common scuba dive entry.  Let me try to explain how one goes about doing this entry.  The diver will prepare himself as usual; approach the platform wearing fins, mask, regulator in mouth; and when they are ready and it is clear they will bend at the knee and spring up and outward bringing both legs up towards their chest as they jump out.  I feel fortunate that I was able to snap this fab photo because this is definitely the type of scuba dive entry that you need to see to believe it.  The Splash Factor is a 5!

The ultimate Froggy!

West Caicos, Turks and Caicos Islands

Free-Style

The Free-Style category is an anything goes division in the rating of scuba dive entries.  Some divers tend to be performers.  They like the attention and want to try things a little out of the ordinary and always with a touch of shock value added to the list.  I remember watching anxiously as this young girl did a flip in the air from the edge of the boat to the water wearing all of her dive gear.  I do not recommend that at all as it looked just like an accident waiting to happen!  I also remember this fantastic little bearded Russian man who would gently fall into the water like a tree that had just been cut down.  He’d rotate slightly in a log roll so he’d hit the water just right.  I wanted to yell “TIMBER!” every time he went for his dives.  We also had the pleasure of hosting Dave Smith and his dive shop, Blue Horizons Dive Center in Pennsylvania.  Dave is a performer too!  I was able to capture him doing an awesome cannon ball as his entry into the deep blue sea.  The Splash Factor is almost always a 5 for a Freestyler!

Dave Smith is a true Freestyler with his Cannon ball scuba dive entry!

West Caicos, Turks and Caicos Islands

 

So, what have we learned here?  There are a number of takes on the traditional Giant Stride Entry.  As long as  you are safe, the added style to each entry will generate giggles from your divemasters and dive buddies.  My personal favourite is to jump in and put my fins on while I’m underwater already.  I love the gentle free fall on my toes!  Please don’t hesitate to contact me if you have any questions about these or any other scuba dive entries!  Happy Hopping!

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Part 5 – Your Lungs & Scuba Diving: Easy, Breezy, Breathing!

November 25, 2013 By Dive With Mia

What’s the most important rule in diving?  Never hold your breath!  If you remember one thing from your dive course, that’s usually it; but do divers really know why it’s so important?

This is the final post in a series on air and its relationship to 5 key areas in diving that I’ve been writing about.  If you haven’t already done so, take a peek at the introduction for some important background notes to ensure you understand the basics about air and pressure.  These are directly related to what we’ll be talking about here and I encourage you to explore any of the other topics as well to expand your diving knowledge!

Understanding Air and its Relationship to 5 Key Areas in Scuba Diving

Part 1 – BCD Air Inflation/Deflation and Buoyancy: A Balancing Act!

Part 2 – Equalizing Your Ears: Let’s Get Popping!

Part 3 – Equalizing Your Mask: Don’t Squeeze Me!

Part 4 – From Tank to Breath of Fresh Air: The Journey!

What happens if I hold my breath while scuba diving?

Do you remember when I talked about how the air inside your BCD will expand as you swim up, even just a metre or a few feet?  And the need to let some air escape to maintain your position?

What would happen if you didn’t let that air escape?

Well, you would continue to float upwards and the air would continue to expand and cause you to float up faster and faster – a potentially very dangerous situation because divers need to ascend slowly from every dive (no faster than 18m or 60ft/minute).

Just like your BCD, your lungs have air inside and if you don’t let the air escape as you ascend (even just a metre or a few feet) you can do some serious, if not fatal damage to your lungs and body.  Considering that, let’s get back to that #1 rule in diving again – Never hold your breath and always keep breathing! If you do hold your breath and you ascend, the air in your lungs will expand and keep expanding until any of these life threatening possibilities might happen:

1. Lung over expansion injury where your lungs over stretch from the expanding air that is forced into the chest cavity, otherwise known as pneumothorax (collapsed lung).

2. Lung over expansion injury where your lungs over stretch from the expanding air that is forced into the space between the lungs and around the heart, otherwise known as mediastinal emphysema.

3. Lung over expansion injury where your lungs over stretch from the expanding air that is forced under the skin, otherwise known as subcutaneous emphysema.  I saw this once when a teen was goofing around on his safety stop and the surge brought him up while he held his breath.  The sound of his voice sounded strange and he told us what he had done.  We gave him oxygen and he stayed in the hospital for observation for a day or two, but was okay.

4. The most dangerous of all, Arterial Gas Embolism where the expanding air pushes its way through the tissues of the lungs and into the blood stream where it could cause a blockage to your brain or elsewhere.

To learn more about these and other news and research in diving, check out the DAN website and these articles I referred to when writing this:

Decompression Illness:  What is it and What is the Treatment

Mechanism of Injury for Pulmonary Over-Inflation Syndrome

So, if you are ever in an out of air situation and you need to get to the surface in order to breathe (and your buddy is nowhere to be found or also out of air), remember to swim no faster than 1ft/second and look up while making an “ahhh” or humming sound with the regulator still in your mouth.  The air that is in your lungs will expand as you go to the surface but will be able to escape as you swim up.

Breathing and Buoyancy

Ensuring that you are always breathing during scuba diving not only protects you from fatal injuries, it also allows you to enjoy a more comfortable dive.  Let me explain how your lungs and breathing contribute to buoyancy in scuba diving…

At first thought, it may be difficult to imagine your lungs like a big internal balloon that gets bigger as air goes in (inhale) and smaller as air goes out (exhale), most likely because we don’t actually think about the act of breathing as it happens.  However, the image of a balloon is a perfect example of what our lungs are like.  Just like a balloon, when it is inflated, the balloon floats and when it contains very little air, it sinks – just like our bodies in diving!

Maybe you’ll remember a time when you were VERY excited about a dive…or maybe even a bit nervous and no matter what you tried to do, you could not descend at the beginning of your dive.  You probably didn’t realize it, but you were most likely breathing very quickly with short breaths in and out.  This would have caused your lungs to stay very full of air – which would have made you float!  Remember – Breathe out! Your body won’t forget to breathe in, but by thinking about your exhales:

1. You will feel more relaxed and in control of your breathing as you deliberately push air out of your lungs after each breath in.  If you are excited/nervous, this is also the way to regain control of yourself and feel calm.

2. You will be able to descend more easily as you remove air from your lungs by consciously pushing a nice breath out as you go down and then continue to breathe naturally once you are underwater.

3. You will use less air by producing nice long exhales with every breath in and not have to end a dive early due to low air.

So, if you’d like to descend a metre or a few feet, a nice slow exhale out will cause your lungs to deflate and your body to drop down in the water.  This works the same if you would like to rise up a little – just take a deep breath in, exhale a little bit out, and then another big breath in, and you are likely to start to ascend.  In order for you to keep yourself from ascending more, breathe out completely and to maintain your position in the water (not go up, or down), a steady rhythm of inhale/exhale will keep the volume of air in your lungs consistent to keep you hovering in the same spot.  It is important to note here that while you may not be breathing in a regular rhythm while you are adjusting your position in the water, you must never hold your breath – even just for a few seconds – to maintain your position.  This is called “skip breathing” and can result in carbon dioxide levels which are not being expelled properly to become elevated in your body and may result in you passing out underwater.

Using your breathing as a tool to manage your buoyancy is a technique divers are always trying to perfect.  Practice every time you go out diving and don’t forget the number 1 rule in diving!

I’d love to hear from you – Please don’t hesitate to send me a message here, or on my Facebook page and let me know what you think or if you have any questions!

Safe and Happy Diving

DiveWithMia – PADI Scuba Diving Skills, Experience, and Passion for Life!

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Part 4 – From Tank to Breath of Fresh Air: The Journey!

May 25, 2013 By Dive With Mia

Air, air, everywhere!  I think it’s interesting to meet divers and non-divers of various levels and to listen to their interpretations of how scuba functions.  I can’t tell you how many people refer to breathing the air from their tank as “breathing oxygen”, which is incorrect.   In this section of the 5 part series on air and its relationship to diving, I’d like to offer a summary of what actually happens when you take a breath through a regulator underwater!  If you’d like some other insights into air and its relationship to diving, please check out the other parts of my series here:

Understanding Air and its Relationship to 5 Key Areas in Scuba Diving

Part 1 – BCD Air Inflation/Deflation and Buoyancy: A Balancing Act!

Part 2 – Equalizing Your Ears: Let’s Get Popping!

Part 3 – Equalizing Your Mask: Don’t Squeeze Me!

Part 5 – Your Lungs & Scuba Diving:  Easy Breezy Breathing!

Air and the Scuba Tank

Before I begin, here’s a little information about the air that is in your scuba tank.  First of all, the air that we breathe underwater, is the exact same as what we breathe on land (21% oxygen, 79% nitrogen); the only difference is that it is compressed to fit inside a tank.  You may have heard divers talking about the size of their tanks:  80 cubic feet/ 12L; 63 cubic feet/ 10L; 100 cubic feet/ 15L; but, what exactly are these numbers referring to?

In the metric world, divers refer to the size of their tank based on the internal volume, for example, as if it was filled with water.  When we talk about a 15L, 12L, or 10L tank, it is with reference to how much water it can hold.  In fact, it actually holds 2265L of compressed air to a working pressure of 3000psi/210bar.  Considering the average person is breathing about 12L per minute on the surface while at rest, it’s good to know that there is more than just 12L of air in your typical tank!

In the imperial world, divers also refer to the size of their tank based on the internal volume, although they make reference to the capacity it has to hold compressed air to a working pressure of 3000psi/210bar as opposed to how much water it can contain.  So, you may hear a person refer to a standard tank as an 80, which means it can hold 80 cubic feet of air (the equivalent to 2265L).
So now we know that the air inside a scuba tank is the same as the air that surrounds us only that it is compressed to fit into a small container.  Just like a little backpack of air!  We also know how much air a typical scuba tank is able to hold.  What’s next?

How does the compressed air in your tank become the air you breathe underwater?  As you may remember from your scuba diving training, your regulator system is made up of 2 stages:  The First Stage, which is the part you attach to your tank and the Second Stage, which is what you breathe from (otherwise known as the Regulator and Alternate).  If you remember from my previous blog on air, as you go underwater, the air becomes denser; however, the air that’s protected by the walls of your tank is not affected by the increasing pressure underwater.  It stays the same.

The First Stage

If there was no First Stage, the air that came out of your tank would come out with a big blast because the contents are compressed into a small space.  So, to control the amount of air released every time

First Stage Balanced Diaphragm Diagram

First Stage Balanced Diaphragm Diagram

you take a breath, the regulator mechanism reduces the pressure in 2 stages.  Imagine your First Stage in 3 distinct, but interconnected parts.  All of the chambers are connected via a valve running from the first chamber through the second and attached to a rubber diaphragm, which separates the second from the third with a spring connected to the diaphragm in chamber 3.  Let’s look at each chamber individually:  We’ll call the first “The High Pressure Chamber” (Chamber 1).  This one is filled with high pressure air delivered directly from the tank when you turn it on.  It remains closed via the valve until you inhale.  The next chamber, which your regulator hose is attached to, will be called “The Intermediate Pressure Chamber” (Chamber 2).  This one is filled with intermediate pressure air as well as having a very cool relationship with the final chamber, which we’ll call “The Water Chamber” (Chamber 3).    Chamber 3 is filled with water, which mirrors whatever surrounding pressure you are at; whether you are at the surface, 30ft/9m down, or 100ft/30m down.  The surrounding pressure from Chamber 3 determines the intermediate pressure found in Chamber 2.  This is done via the rubber diaphragm.  So, those are your 3 compartments, now let’s see what happens when you inhale!  By taking a breath, we remove air from Chamber 2, thus reducing the intermediate pressure and causing the water in Chamber 3 to apply force onto Chamber 2 via the diaphragm.  But never fear!  This push opens the valve to Chamber 1, releasing a fresh batch of high pressure air and filling Chamber 2 until it is back to the surrounding pressure which pushes the diaphragm back to normal.

Woo Hoo!  Isn’t air and pressure cool?

The Regulator and Alternate

Alright, so we have got the high pressure air from your tank reduced to intermediate pressure in the First Stage, what happens once it gets to your regulator?  When the air arrives at your regulator, the pressure is reduced a second time (hence the name “second stage”) to the surrounding pressure.  The mechanism inside the regulator is actually quite simple.  Underneath the plastic cover you can find a rubber diaphragm which is attached to a little lever that acts like a valve to allow or stop air from the hose.  Underneath the plastic cover, you can find the exhaust where the bubbles go out when you exhale.  When you breathe in, the surrounding pressure is reduced inside the regulator, so the water pressure pushes in on the diaphragm, which releases the lever allowing air to flow in through the mouthpiece and into your lungs!  When you exhale, the surrounding pressure inside the regulator is increased, which pushes the diaphragm out and allows the lever to close the valve and opens the exhaust valve to allow the air to escape.  Pretty neat, eh?

Mia’s Recommendations

There are so many different brand names and a few different innovative features, but ultimately regulators and first stage systems are virtually the same.  If you plan to dive in cold water, you will want to ensure that the First Stage has some kind of environmental dry sealing feature to prevent the Chamber with water inside from freezing.

Some regulators will come with a “sensitivity” lever called a venturi switch which you can set to low (-) while on the surface to avoid free flows when the regulator is not in your mouth and resting on the surface of the water;  or set to high (+) while diving which is supposed to allow for ease of breathing.  In my experience, I always set this feature to low and divers who are relaxed underwater never experience difficulty breathing on that setting.  Sometimes I wish that setting didn’t even exist due to the amount or air lost through free-flows on the surface!  It’s not really needed, in my opinion.

Apeks XTX50 First Stage and Regulator

Apeks XTX50 First Stage and Regulator

The First Stage I use is the first one I ever bought back in 2007 and is an Apeks, by Aqua Lung, which has a reputation for being a good quality cold water diving system while perfectly good in warm waters as well.   The regulator itself is a low end (and super!) XTX50, which has served me well for all the diving I’ve done over the last couple years.

 

 

 

Apeks Egress Alternate Regulator

Apeks Egress Alternate Regulator

Mares Rebel Alternate

Mares Rebel Alternate

As for the Alternate, at the moment I am using a Mares Rebel, which replaced my Apeks Egress.  I decided to switch from the Egress to the Rebel mostly for teaching purposes.  The Egress can be used with the mouthpiece inverted or not, whereas, most regulators only function with the mouthpiece up (otherwise water enters in).  This is definitely a useful function for recreational divers; however, since I was teaching and wanted to represent the most common type of alternate, I decided to switch.

Definitely let me know if you have any questions or comments simply by sending me a message via my Contact Mia page.  Feel free to enjoy my other blogs on Understanding Air and Its Relationship to 5 Key Areas of Scuba Diving, Part 1 – BCD Air Inflation/Deflation and Buoyancy: A Balancing Act!, Part 2 – Equalizing Your Ears: Let’s Get Popping!, Part 3 – Equalizing Your Mask: Don’t Squeeze Me! And finally, Part 5 – Your Lungs & Scuba Diving:  Easy, Breezy, Breathing!

Happy Diving!

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Part 3 – Equalizing Your Mask: Don’t Squeeze Me!

February 27, 2013 By Dive With Mia

The third part in the scuba dive relationships with Air discusses the impact that air has on our masks at depth.  If you haven’t done so already, take a look at my briefing on how air is affected underwater to give you some background information first.

Have you ever wondered why scuba divers can’t use swimming goggles for diving?  Well, there is a very important reason that relates to air and pressure.  Your dive mask covers your eyes as well as your nose (unlike swim goggles) because just like the air space in your ears/sinuses, the air inside the mask becomes denser as you go underwater.  As the air becomes denser inside the mask, it pushes up against your face like a suction cup.  We need to achieve the same goal as with the ears and BCD – maintain a normal amount of air inside the airspace and we do this by pushing air into the space through our nose and into the mask and letting air escape as it expands.  This is called “equalize the mask”.

Mask Squeeze

Sometimes (not all times), if we forget to blow air out our nose and into the mask upon descent, we may end up with a “Mask Squeeze”.  This happens when the mask suctions onto your face so tightly that it bursts some blood vessels leaving a lovely bruise ring around your eyes, perhaps a black eye or two, or more commonly, bloodshot eyes!  This is very easily avoided by giving a puff or two out the nose as you go down.  Don’t worry about expanding air in your mask as you ascend because the air will naturally escape through the skirt of your mask .

Mia’s Helpful Tips!

  1. To select a properly fitting mask, place the mask on your face without putting the strap around your head.  Breathe slightly in through your nose.  If the mask does not fall off your face and you don’t hear or feel any air being sucked in around the skirt – You’ve got a good fit!
  2. If you tend to be a ‘nose-breather’, an exercise you can try in order to train yourself is to wear your mask while you are out of the water (around the house!).  Open your mouth to breathe in and then close it to exhale through your nose.  You will notice the mask popping off your face just a little and the air escaping easily just beneath the skirt of your mask.

Tusa Freedom One Scuba Dive Mask

Mia’s Dive Mask Recommendation!

The mask I am using at the time I wrote this article is called the Freedom by Tusa.  It has an exceptionally soft skirt, a lovely field of vision, and if you have any interest in liberating yourself from unattractive goggle-y eyes – this mask definitely tops the sexy list!

 

 

 

Feel free to send me a message via Contact Mia if you have any questions regarding this topic and definitely check out the other articles in this 5 part series including Understanding Air, Your BCD, and Equalizing Your Ears and Sinuses, Your Tank and Regulator, and Your Lungs & Breathing.  If you “Like” it make sure you let me know on my Facebook page DiveWithMia!

 

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Part 2 – Equalizing Your Ears: Let’s Get Popping!

April 10, 2012 By Dive With Mia

In my introductory post, I explained, in basic terms, what happens to Air when you go beneath the surface of water and in Part 1 I talked about buoyancy and the relationship between Air and the BCD.  In this post, I will describe the part that Air plays on our Ears and Sinuses and how we adjust our bodies to that with some super tips to help you in one of the most common challenges as new divers!

Even if you don’t know anything about scuba diving, there is a general understanding that something happens to our ears when you dive down deep and similarly when we’re on an airplane.  Many people even feel afraid to give scuba diving a try because of some discomfort they felt while free-diving.  Sometimes they think that the discomfort will be worse while scuba diving because typically it’s deeper than free-diving, but this is not necessarily true!

Ear Diagram

Ear Diagram

Let me first explain a little about our Ears and Sinuses… There are tubes leading from our ears and sinuses to our throats and they are filled with air.  As soon as you go underwater, our bodies feel the pressure and the weight of the water on these spaces as the air inside them becomes “smaller” (read my intro for more info on why air becomes “smaller” underwater).  The tubes are squeezed together by the pressure and the result is discomfort.  Our goal is to maintain a normal amount of air inside this airspace and push open the tubes, so we “equalize” it to the surrounding (“ambient” pressure for each depth).  We do this as soon as we go underwater and every 1m/3ft before any discomfort is felt.

It’s so easy to prevent any discomfort simply by pushing air into those spaces as you go down and we do that in 3 common ways:
1. Take a breath in through your mouth, plug your nose with your mouth now closed, and then try to breathe out your nose (while it is plugged).  This will push the air from your lungs into the ear tubes and sinuses instead of out your mouth/nose where they normally go.  Your Ear and Sinus air spaces open up!
2. Swallow and wiggle your jaw.  You can tilt your head from side to side and try to stretch your neck to try to help your body in letting the air get inside those tubes and air spaces.
3.  Do #1 while doing #2!

It’s also important to note that, as we talked about in the previous posts, not only does air change when you go down↓, but it will change when you go up↑.  You will remember that, as you swim up, you must manually release air from your BCD to adjust for the expanding air; however, with our Ears and Sinuses, we are lucky in that our bodies will release the expanding air naturally for us.  There is nothing you need to do with your Ears and Sinuses upon ascent.

So, just before I go into my tips, I want to point out a main difference I’ve noticed between free-diving and scuba diving with regards to equalizing your ears.  Many people (including myself) feel discomfort while free-diving because the descent tends to be very rapid – you’re holding your breath after all!  Whereas, with scuba diving a typical descent is slow and controlled, so you have the time to “clear” even the most sensitive of ears before ever feeling any discomfort.  Just like anything else with diving, it does take practice, so make sure you take your time!

Mia’s Helpful Tips!
1.    Prevention. Remember – equalizing is a preventative measure.  It’s a common misconception that you should wait until you feel discomfort and then try to equalize.  Don’t Wait!!
2.    Having Difficulty. Don’t push too hard!  The tissues inside your ears and sinuses are very delicate.  If you are having difficulty equalizing, ascend up 1m/3ft where the pressure is less and try again.
3.    Cold and Allergies. If you have a cold or allergies, the tubes and sinus air spaces will be swollen and filled with mucous (fluids).  You won’t be able to push air into these areas sufficiently OR the air that does get in may not be able to get out upon ascent.  As you swim up, it will expand inside the tubes and sinuses resulting in much pain called a Reverse Block and possibly permanently damaging these delicate tissues.  Try snorkeling on days that you have a cold/allergies!  Sometimes the salt water is just as good as a nasal spray with saline solution to get those boogies out!
4.    Changing depth. Remember – equalizing is not limited to your first descent along a line.  As you follow a sloping bottom, don’t forget to continue to equalize.  You will always need to adjust the amount of air inside those spaces depending on whichever depth you go to.
5.    Ear Plugs. If your ears are prone to infection, you may be using ear plugs.  My preferred ones are Doc’s Pro Plugs.  Make sure you purchase the ones with a pin hole so air is able to escape upon your ascent!
6.      Cleaning. I usually use a half and half mixture of alcohol and vinegar after I’ve been in the water.  The alcohol dries out all those little crevices in your ear that are prone to infection and the vinegar gives it all a good clean (and you get to smell like fish and chips – Yum!)

As you may be aware, I began this 5 part series with a goal of addressing some common queries I get from various dive students as well as certified divers.  While everyone receives the same training from PADI around the world, a lot of the practical tidbits of useful information are shared pre and post-dive on the boat or over a beer at the end of the day.  I know for me when I first started out diving, I only had the chance to dive maybe twice a year if I was lucky, so my learning curve was slow.  I’m hoping that these blogs will be able to provide some additional insights my divers can refer back to.  I hope you enjoy and feel free to let me know what you think via my DiveWithMia Facebook page or click on Contact Mia!

DiveWithMia – PADI Scuba Dive Skills, Experience, and Passion for Life!
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Claustrophobia vs. Freedom

February 17, 2012 By Dive With Mia

Time and time again, when people discover I am a scuba dive instructor, many respond with “Oh, I would love to try it, but I am claustrophobic”.  For many who haven’t experienced it, scuba diving instills a feeling that they are trapped, confined and restricted.  They see diving as being trapped under so many feet of water and confined behind their mask and their movements restricted.  Diving is a sport that is fundamentally psychological where your mind is actively involved in all the physical components as well.

For me, as soon as I enter the water and begin to descend below the surface, air slowly being released from my lungs in the form of bubbles, I am embraced by a gentle sense of peace.  Movements are slow underwater and the hectic sounds of the day are removed and engulfed by my everlasting companion, the water.  Even when the ocean is rough and seems to be pushing me around, I give myself to him and trust my experience and instinct to move with him and vow not to fight him and the encounter is always better below the surface.

At the bottom of the ocean, hovering just above the sea bottom, a new and fascinating world is exposed.  Colours that don’t exist on the surface with animals seemingly hand-painted by some concealed artist flick in and out of coral crevices oblivious to my unseemly presence.  In pairs, butterfly fish dart over the reef in a life they will live together forever.  Opposite to feeling entrapped, a sense of freedom is unleashed upon me as I glide through a medium others believe to be inhibiting.  Drifting through water is what I imagine a bird feels like who soars through the sky, but only slower and more meditative.

When you learn to dive, for many, there can be overwhelming feelings of excitement, apprehension, exhilaration and even downright fear.  Not to mention, there tends to be an added dose of adrenaline thrown into the mix.  These can be alleviated significantly when you take your dive training with someone you trust and who is attentive to your learning.  The more you dive, the more tranquil the experience will be and the trust that, in the beginning, you give to your instructor or guide becomes the trust you have in yourself.

 

canyon-diving-dominican-republic-sosua

Judy and Mia at Canyon

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PADI Advanced dives with Marcus

June 5, 2011 By Dive With Mia

Diving and kiting seem to go hand in hand in a way…at least on the north coast of the Dominican Republic they do!  Generally the diving around here is a two tank dive in the morning that finishes around 12:30pm.  And the kiting starts when the wind begins to blow blow blow usually around 1pm.  So the super adventurous water sport enthusiasts who come to Cabarete and Sosua can be both underwater and gliding the surface of the Atlantic Ocean all in one day!  And with Marcus not having dived in quite a number of years, I recommended the PADI Advanced Open Water diver course, which included 5 Adventure dives with yours truly (me!).  We even enticed his lovely girlfriend, Viera, to give diving another go with the Discover Scuba course.  While Marcus and I practiced superb buoyancy control as we swam through the awesome canyon at the same-named dive site Canyon, Viera was practicing in the pool.  For our second dive, Marcus did the Boat Adventure dive and we went to one of my favourite dive sites – Three Rocks; Viera looked on from above as a snorkeler and Marcus spent his time carefully capturing the underwater world with his camera!  These great shots can be found on my website and Facebook page!  We enjoyed a nice and slow dive and the company of a very special Yellow-tail Snapper who followed us along for our entire dive like a love-sick puppy!  The next time I see Marcus and Viera, I think she will be ready to take a deeper plunge and join us below the surface!

The following day we finished with 3 more Adventure dives – Wreck, Deep, and Underwater Navigation.  We headed out to the Zingara Wreck for a great swim around that gorgeous sunken treasure and followed with Mini Wall and Larimar I for Navigation.  I was so impressed with Marcus’ swift handling and problem-solving of all the compass and natural navigation skills we had to do!    Not to mention a cutie-pie moray eel popping his head in and out of rocks with a friendly smile to say ‘hi!’.

I loved spending time with this couple as despite the lack of wind for a vacation meant for kite surfing, they were able to capture the essence and endless appeal of the Dominican Republic.  They enjoyed a bit of grey weather, a gorgeous ocean, and spontaneous roadtrips and ended their vacation with words that they would be back and for long term!  This wasn’t the first time I had heard these comments :D

Can’t wait to see you guys again!!

yellow-tail-snapper-sosua-three-rocks

Yellow Tail Snapper at Three Rocks in Sosua, DR

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