Tobermory, Lake Huron
Shore Diving in Tobermory, Ontario, Canada
Otherwise known as “Tobbers” in some diving circles (or just mine?) presents a very unique fresh water scuba diving experience compared with the rest of Canada. The waters off the shores of the beautiful Bruce Peninsula possess the same turquoise hues and clarity as many southern Caribbean destinations and are a host to near perfectly preserved ship wrecks and cool grottos. The town of Tobermory is an awesome little town built up around the harbour with two dive shops (Diver’s Den and G + S)that offer charters and rentals. Last time I was there they were working together to offer alternating charters – I like it when dive companies work together! All of the dive sites in the area are marked by the Fathom Five National Marine park and require a park permit tag to be purchased as well as displayed on your gear.
Pelee Island, Lake Erie
Pelee Island, Ontario, Canada
Lake Erie is the smallest of all the Great Lakes, which renders it warmer than all the others, but at the same time it suffers from quite a bit of turbidity and low viz after rain and wind. There also lies an abundance of easily accessible and well-preserved wrecks to explore. The only one I’ve done so far is called the George Stone, which is a 283 foot wooden freighter that sank on October 13, 1909. In less than 12m/40ft of water, this dive site is perfect for the new diver who craves a wreck diving adventure!
Brockville, St. Lawrence River
Lillit Parsons Wreck, Brockville, Ontario, Canada
Brockville is my absolute favourite area to dive in all of Ontario. One reason is that the water is quite warm (in the 70F/21C in the summer), it has awesome strong drift diving, and very cool wrecks to explore. On a side note, many of the dive sites require your passport as they lie on the American side of the river, so make sure you don’t forget to bring it! I remember diving the Lillie Parsons, which sank in 1877 (!) in 17m/55ft of water where they have installed a massive chain along the bottom next to the overturned ship. You have to pull yourself up the chain against the current all the while taking a peak underneath to see some nice size bass escaping the ripping current. Once you get to the end, let go of the chain and let yourself soar like superman over the hull of the ship until you get to the end and do it all over again! Fun! After you are done diving, make sure you check out Don’s Fish and Chips for their famous fish and chips that they store in a bathtub 
Muskoka
The Waome Wreck, Lake Muskoka, Milford, Ontario, Canada
Just 2 hours or so from Toronto, Muskoka is a well-loved home away from home for many Ontario-ites who are lucky enough to enjoy second homes on tea-coloured lakes and intertwining green rivers. These lakes can run very deep and (sadly) with the infiltration of zebra mussels, lend themselves to famously clear waters. The dive site I loved so very much here – The Waome (Ojibwa word meaning Water Lily) – can be found in Lake Muskoka in 20m/65ft of water. This wreck was a sister ship to the famous Seguin passenger ferry and sank in 1934 with 3 crew members died. While exploring this wreck, I truly felt like I was hovering next to a haunted house, shining my light in through the windows and noting the perfectly carved and preserved wooden railings. A fun and spooky treat indeed!