Lock 20 is a submerged historical site located on the Montreal South Shore, created following the expansion of the St Lawrence Seaway in 1958. Divers can explore the remains of the lock structure, which was submerged alongside other infrastructure including roadways and canals during the seaway development. This site is intended for advanced divers due to the strong currents present in the area. Visibility is variable and typically ranges between 1 and 5 metres. Access to the site is possible via both shore and boat entries. As an industrial underwater site, it offers a unique perspective on the region's maritime history.

Soulo is a wreck and reef site located on the Montreal South Shore in the St. Lawrence River. This shore entry dive features a moderate current that can shift with river flow, requiring careful buoyancy control and positional awareness. The site is characterised by cold water conditions, making a drysuit or thick wetsuit essential for comfort. Divers should remain cautious of boat traffic and potential entanglement hazards around the wreck structure. Due to the enclosed nature of the wreck, entry into overhead environments is restricted to those with specific training. The habitat supports various temperate freshwater fish and invertebrates typical of the region.

Piscines & Spas Marcoux is a freshwater artificial reef site located on the Montreal South Shore. The site features a structure positioned between 3 and 18 metres, with an average depth of 10 metres, making it suitable for beginner divers. Visibility typically ranges from 5 to 15 metres, though conditions can change rapidly. Divers should be prepared for cold water and significant thermoclines, particularly at depth. Hazards include entanglement risks around the artificial structure and low visibility. On-site facilities include air fills, equipment rental, changing rooms, toilets, and a rinse station. Guided tours are available for those requiring assistance.

Parc des Îles de Saint-Timothée is a freshwater artificial reef located on the Montreal South Shore. The site features a consistent, shallow depth averaging 3 metres, making it a suitable location for beginners. Access is via a shore entry, and conditions are generally stable with mild currents and no thermocline. A typical dive session lasts approximately 30 minutes. The area is well-supported by infrastructure including parking, toilets, showers, a rinse station, and an on-site cafe. Visitors should remain aware of boat traffic in the vicinity. Guided tours and boat charters are available to assist with site access.

Pointe Des Cascades is a freshwater artificial reef located on the Montreal South Shore. Divers access this site via a shore entry, which is suitable for beginners. The site features an average depth of 6 metres, with a range between 5 and 7 metres. Conditions include mild currents and visibility typically between 5 and 10 metres. The site is accessible for night diving, with water temperatures fluctuating between 7 and 26 degrees Celsius. Facilities available at the location include parking, toilets, and changing rooms. Divers should be aware of low visibility as a potential hazard during their 28-minute average dive.

Canal Soulanges is a decommissioned shipping canal that offers a unique freshwater dive experience featuring submerged infrastructure, wreck features, and artificial reef structures. The site is suitable for beginner divers, with depths ranging from 6 to 20 metres and an average depth of 6 metres. Divers can expect mild currents, though conditions can vary, and visibility typically fluctuates between 3 and 10 metres. Shore entry is straightforward, and the site is well-supported by facilities including parking, toilets, showers, and changing rooms. Divers should remain vigilant for passing boat traffic and be prepared for potential current changes during the dive.

Mc Laren Island is a shore-entry dive site located in the Brockville and Thousand Islands region of Canada. Divers can expect depths ranging from 3 to 8 metres, with the site situated approximately 50 metres from the shore. Conditions at this location are variable, with visibility typically between 4 and 15 metres. The site is subject to strong currents, making it suitable for intermediate divers. Water temperatures remain cold throughout the year, fluctuating between 4°C and 20°C, which necessitates the use of drysuits or thick wetsuits. Facilities available at the site include parking, showers, toilets, and access to boat charters.

Kahnawake Quarry is a freshwater artificial reef and wall site located on the Montreal South Shore. Divers can explore depths ranging from 5 to 30 metres, with visibility typically between 5 and 25 metres. The site features two distinct thermoclines, with the first occurring at approximately 12 metres during the summer. Water temperatures fluctuate significantly, ranging from 15.0 to 25.0 °C in summer and dropping to 0.0 to 5.0 °C in winter. Shore access is available, and the site is suitable for beginners. Facilities at the location include parking, a dive shop, air fills, and guided tours. Night diving is permitted at this site.