Bolles Harbor Dike is an artificial reef formed by man-made rock structures protecting the harbor entrance. The site offers depths ranging from 3 to 8 metres, with an average of 6 metres. Snorkelers can explore the edge of these rock dikes, which provide a habitat for various freshwater fish. Conditions are variable, with visibility ranging from 1 to 15 metres and mild currents present. Due to the presence of boat traffic, snorkelers should exercise caution. The site is suitable for intermediate snorkelers, with water temperatures reaching comfortable levels between June and September.

Sterling State Park, located on the Detroit River and Lake Erie, offers a mile of sandy shoreline suitable for beginner snorkelers. The site features a shallow reef environment with an average depth of 2 metres, ranging between 1 and 5 metres. Snorkelers can explore the sandy bottom and areas with submerged timber. Conditions vary, with visibility typically between 1 and 5 metres and moderate currents. Water temperatures fluctuate significantly throughout the year, from 1°C in winter to 25°C in July. Hazards include boat traffic, surf, rip currents, and low visibility. Facilities available on-site include parking, toilets, showers, changing rooms, and a rinse station.

Brest Bay in the Detroit River features submerged rock piles and ridges that provide vertical structure for divers and snorkellers. This freshwater site consists of both natural and artificial reef formations at depths of 3 to 5 metres. Access is strictly by boat, and the site is suited for intermediate divers due to variable conditions. Visibility typically ranges from 3 to 10 metres, with mild currents present. Water temperatures fluctuate significantly throughout the year, ranging from 1C in winter to 25C in July. Divers should remain aware of boat traffic and the risks associated with cold water, particularly outside of the summer months.

Genoa Quarry is a spring-fed artificial reef located near the Detroit River. This site offers depths ranging from 1 to 30 metres, with an average depth of 10 metres. Entry is via the shore, making it accessible for beginners. Visibility varies significantly, ranging from 3 to 24 metres. Divers should be aware of hazards including cold water, deep sections, potential entanglement, and periods of low visibility. Facilities at the site include parking and toilets. Typical dives last approximately 60 minutes. While the site is used for both diving and snorkelling, the snorkelling experience is rated 2 out of 5.

Bar Point Shoal is a rocky shoal located at the mouth of the Detroit River. This site features a rugged lake bottom at depths ranging from 2 to 7 metres, with an average depth of 4 metres. Access is by boat only, as the site is situated 3,240 metres from the shore. Conditions at this location are variable, with moderate currents and visibility typically between 2 and 5 metres. Due to the presence of boat traffic, cold water temperatures, and strong currents, this site is suited for intermediate snorkelers. Water temperatures fluctuate significantly throughout the year, ranging from 1°C in winter to 25°C in July.

Holiday Beach is a popular shore-entry snorkeling site located along the Lake Erie shoreline near Rondeau and Erieau. The site features a long sandy beach with a shallow, sandy bottom, making it suitable for beginners. Water temperatures fluctuate significantly throughout the year, ranging from 1C in winter months to 25C in July. Divers and snorkellers should be aware of variable conditions, including potential rip currents, surf, surge, and periods of low visibility. On-site facilities include parking, toilets, showers, and changing rooms to support visitors.

White Sands is located at the southern tip of Boblo Island where the Detroit River meets Lake Erie. This site features a man-made white sand beach and a combination of natural and artificial reef structures. Snorkellers can explore depths ranging from 5 to 15 metres, with an average depth of 10 metres. Access is strictly by boat, as shore entry is not possible. Conditions include mild currents and visibility typically between 2 and 5 metres. Water temperatures fluctuate significantly throughout the year, ranging from 1 to 25 degrees Celsius. Due to the presence of boat traffic and potential entanglement hazards, this site is best suited for intermediate-level snorkellers.

Elizabeth Park is a muck dive site located in the Detroit River, suitable only for advanced divers. The site features depths ranging from 2 to 9 metres and is accessed via the shore. Divers should be prepared for strong currents, low visibility, and potential hazards including boat traffic and entanglement. Due to these challenging conditions, specialized equipment and training for river diving are required. The site offers opportunities to search for historical items such as old bottles. Facilities at the park include parking, toilets, and showers. Water temperatures fluctuate significantly throughout the year, ranging from 1 degree Celsius in winter to 23 degrees Celsius in July.