Wellington Rotary Beach provides shore access to Lake Ontario, featuring a stony beach entry. The underwater topography is characterised by large rocks and boulders that create a complex environment for local freshwater fish and invertebrates. Divers can expect visibility ranging from 10 to 20 metres, though water temperatures vary significantly between 2C and 23C, with potential for thermoclines. This site is suitable for beginners, with mild currents and typical dive durations of 45 minutes. Facilities available at the beach include parking, toilets, showers, changing rooms, and a rinse station. Snorkelling is also possible at this location.

Kingston Harbour offers a freshwater wreck dive experience with depths ranging from 15 to 40 metres, averaging 25 metres. This site requires boat access and is suited for intermediate divers with wreck endorsements. Conditions include moderate currents and visibility fluctuating between 5 and 30 metres. Thermal protection is essential, as water temperatures vary significantly throughout the year, with cold thermoclines often present below 10 metres. Divers must manage risks associated with cold water, entanglement, and surface boat traffic. A surface marker buoy is necessary for safe ascents. Drysuits are strongly recommended to handle the cold water environment.

Dunes Beach at Sandbanks Provincial Park offers a unique freshwater snorkeling experience defined by its massive underwater sand dunes. Located on the sheltered West Lake side of the park, the site features depths ranging from 2 to 8 metres, with an average of 5 metres. Water temperatures here are warmer than those found on the Lake Ontario side of the park. Conditions vary, with visibility typically between 5 and 15 metres and mild currents. Access is via a shore entry. The site is suitable for beginners, though snorkelers should remain aware of potential rip currents and surf conditions. Facilities include parking, toilets, showers, changing rooms, a cafe, guided tours, and equipment rental.

Prinyers Cove is a sheltered, shallow reef site located at the Wolfe Island Graveyard. This location is well-suited for beginner divers, offering a protected environment with mild currents and minimal wave action. Depths range from 1 to 9 metres, with an average of 5 metres, providing a calm setting for practice. Visibility typically fluctuates between 3 and 8 metres. Divers can expect to encounter a variety of temperate freshwater fish and invertebrates common to the region. Facilities at the site include parking, toilets, showers, and changing rooms. Access is available from both shore and boat, with typical dives lasting around 45 minutes.

North Beach in Kingston offers a freshwater snorkeling experience featuring a mix of reef and seagrass habitats. The site is characterised by a steep drop-off located close to the shore, which transitions into sandy patches. Conditions are generally suitable for beginners, though the area is subject to mild currents, surf, and potential rip currents. Water temperatures fluctuate significantly throughout the year, ranging from 2C in March to 22C in August. Access is via a shore entry. On-site facilities include parking, toilets, showers, changing rooms, a rinse station, and a cafe to support visitors.

Little Bluff Conservation Area features a steep cobblestone barrier beach situated beneath a 20-metre limestone bluff. This freshwater site in Prince Edward Bay offers a rocky bottom and aquatic vegetation, with water clarity often superior to other local areas. Snorkelling is best suited for intermediate participants due to the shore entry and mild currents. Depths at the site reach up to 5 metres. Water temperatures fluctuate significantly throughout the year, ranging from 2C in winter to 23C in August. Facilities at the conservation area include parking and toilets.

Calf Pasture Point in Kingston, Canada, offers a sheltered freshwater snorkelling experience within Presqu'ile Bay. The site features a combination of reef and seagrass habitats, providing a calm environment compared to the open lake. With an average depth of two metres, ranging between one and three metres, it is well-suited for beginners. Snorkellers can expect mild currents and visibility typically between three and six metres. Shore access is available, supported by on-site facilities including parking, toilets, and showers. Due to the nature of the environment, be aware of low visibility as a potential hazard.

Gull Island near Kingston offers a rugged freshwater snorkeling experience featuring extensive rocky reefs. Access to the site is restricted until after September 10th each year due to bird nesting activity. Water temperatures fluctuate significantly throughout the year, ranging from 2C in March to 22C in August. Due to the potential for surf and boat traffic, this site is suited for advanced snorkelers. Entry is possible from both shore and boat. On-site facilities include parking, toilets, showers, changing rooms, a cafe, and access to guided tours or boat charters.