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.

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.

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.

The M. I. Wilcox is a freshwater wreck situated at a consistent depth of 8 metres, making it an accessible site for beginner divers. Located 700 metres from the shore near Rondeau and Erieau, this wreck offers a dive experience with visibility typically ranging between 5 and 10 metres. Divers should be prepared for cold water temperatures, which fluctuate significantly throughout the year, and be aware of potential thermoclines. Hazards at this site include boat traffic, entanglement risks, and variable surf conditions. Dives typically last around 30 minutes. Thermal protection should be selected based on actual water conditions rather than the calendar month.

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.

Peche Island, located at the confluence of Lake St. Clair and the Detroit River, offers a unique freshwater snorkeling experience. The site features shallow canals and a northern rocky shoreline where snorkelers can explore historical ruins and various submerged structures. Access is available from both shore and boat, with the site situated 330 metres from the shore. Conditions vary, with moderate currents and potential for low visibility, cold water, and boat traffic. Due to these factors, including down currents and entanglement risks, this site is suited for intermediate snorkelers. Water temperatures fluctuate significantly throughout the year, ranging from 1°C in February to 23°C in August.

The George Worthington is a freshwater wreck located in Lake Erie, resting at depths between 7 and 12 metres. This site offers a distinct structure providing hard relief against the otherwise flat lakebed. Divers require boat access to reach the wreck, which is suitable for intermediate-level divers. Conditions are variable, with visibility ranging from 3 to 10 metres and water temperatures fluctuating significantly by season. Divers should be aware of entanglement hazards and the potential for low visibility. A torch is recommended to inspect shadowed sections of the hull. Always monitor local surface conditions for surge and swell before entry.