Ryerson's Island Shallows is a freshwater site located in the Inner Bay of the Great Lakes and Ontario, Canada. This area features shallow, protected waters surrounding a small island, characterised by a mix of reef and seagrass habitats. The site is suitable for beginners and requires boat access. Water temperatures fluctuate significantly throughout the year, ranging from 1C in the winter months to 23C in August. Facilities available at the site include parking, toilets, and showers. The current is generally mild, making it a manageable location for snorkelling activities.

Monarch's Rest Beach is a shore-entry site located within Long Point Provincial Park. The topography features a sandy bottom that gradually transitions into a drop-off, with depths ranging from 1 to 5 metres and an average of 2 metres. This site is suitable for beginners and offers a typical snorkel duration of 30 minutes. Water temperatures vary significantly throughout the year, reaching up to 23C in August, though conditions remain cold outside of the summer months. Species recorded around this area include various freshwater fish and invertebrates such as snails, blue gill, perch, and crayfish. Facilities at the beach include parking, toilets, and showers. Hazards include cold water, jellyfish, and surf.

Millionaires in the Inner Bay is a sheltered freshwater site near the Old Cut channel. The topography consists of a dark, weedy bottom featuring both reef and seagrass habitats. This area is notably warmer and calmer than the open lake, making it suitable for beginners. Divers can access the site from either the shore or by boat. Conditions are generally mild, though water temperatures fluctuate significantly throughout the year, ranging from 1°C in winter to 23°C in August. Facilities available at the site include parking, toilets, showers, changing rooms, a rinse station, air fills, equipment rental, and boat charters.

Cottonwood Beach is a shore entry site located in the Old Park section of Long Point near Port Rowan. This freshwater location features shallow depths ranging from 1 to 5 metres, with an average depth of 2 metres. It is suitable for beginners, though divers should be aware of potential hazards including boat traffic, surf, and cold water temperatures. Water temperatures fluctuate significantly throughout the year, peaking at 23°C in August and dropping to 1°C in February. Facilities available at the site include parking, toilets, showers, changing rooms, and a rinse station. The site is generally considered more appropriate for shallow water activities than deep diving.

Turkey Point Breakwater serves as an artificial reef formed by the rocky structure of the marina breakwall. This freshwater site offers depths ranging from 2 to 10 metres, with an average depth of 6 metres. Divers can expect moderate currents and visibility typically between 15 and 18 metres. Entry is via the shore. The site is suitable for intermediate divers, though conditions vary. Hazards include boat traffic, cold water, low visibility, and surge. Facilities available at the location include parking, toilets, and showers. Snorkelling is possible at this site, with a rating of 3 out of 5.

Bluff Bar is a remote sandbar located in the Outer Bay of the Great Lakes, Ontario. This freshwater site features a sandy environment that rises from depths of approximately 8 metres to just inches below the surface. Snorkellers typically experience depths ranging from 1 to 8 metres, with an average of 5 metres. Access to this site requires a boat, as it is situated 3000 metres from the shore. Conditions vary, with mild currents and potential hazards including boat traffic, entanglement, low visibility, and surge. The site is suited for intermediate snorkellers, with a typical visit lasting 45 minutes.

Normandale Beach on the Niagara Peninsula offers a gradual drop-off and a shore entry point for snorkellers. The shoreline is characterised by small rocky patches. Conditions at this freshwater site are variable, with potential for strong currents, surf, and low visibility. Water temperatures fluctuate significantly throughout the year, ranging from 1°C in winter to 23°C in August. The swimming season is generally limited to July through September when temperatures reach approximately 20°C. Due to the cold water and potential for strong currents, this site is best suited for those prepared for challenging freshwater conditions. Parking is available for visitors.

Big Creek is a marshy freshwater site in the Great Lakes and Ontario region, often referred to as the Canadian Amazon. The topography consists of submerged logs and lily pads, providing a distinct environment for divers and snorkellers. Entry is via the shore, and the site is suitable for beginners. Conditions vary, with water temperatures ranging from 1°C to 23°C throughout the year. Divers and snorkellers should be aware of potential hazards including boat traffic, cold water, down currents, entanglement, low visibility, overhead environments, and strong currents. Parking is available at the site.