Young State Park, located on the eastern arm of Lake Charlevoix in the Straits of Mackinac, offers a accessible shore entry for snorkellers. The site features a sandy bottom that supports easy navigation and visibility near the shoreline. Water temperatures vary significantly throughout the year, peaking between 13°C and 21°C during the summer months, while dropping to as low as 1°C in late winter. This site is suitable for beginners, though snorkellers should remain aware of boat traffic and the potential for cold water. On-site facilities include parking, toilets, showers, changing rooms, and a rinse station, alongside access to equipment rental and guided tours.

The Jacob P is a freshwater wreck site located in the Straits of Mackinac. This dive is suitable for intermediate divers, with an average depth of 10 metres. Access to the site is by boat only. Divers should be prepared for variable visibility ranging from 5 to 20 metres and mild currents. Water temperatures fluctuate significantly throughout the year, reaching a maximum of 19C in August and dropping to near freezing in winter months. Due to the cold water and potential for boat traffic, appropriate thermal protection and surface safety protocols are essential for all dives at this location.

Depot Beach in the Straits of Mackinac offers a shore-entry freshwater reef dive ranging from 5 to 20 metres. The site is suitable for beginners due to the lack of current and consistent visibility of 30 metres. Divers should be prepared for cold water temperatures, which fluctuate between 1 and 17 degrees Celsius throughout the year. A thermocline is present at depth, requiring careful monitoring of thermal comfort. A thick exposure suit or drysuit is recommended for all dives. On-site facilities include parking, toilets, showers, and changing rooms to assist with gear preparation and post-dive rinsing.

The Keuka Wreck is a freshwater shipwreck located in the Straits of Mackinac. Resting at an average depth of 14 metres, the site offers a range of 5 to 15 metres for divers and snorkellers. Access is possible via both shore and boat, with the wreck situated approximately 805 metres from the shore. Conditions at the site include mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate significantly throughout the year, peaking at 18C in August and dropping to 1C in late winter. Divers should be prepared for cold water, potential entanglement hazards, and variable visibility. Parking facilities are available for visitors.

Aloha State Park on Mullett Lake offers a freshwater snorkeling experience along the northeast shore. The site features a protected boat basin and sandy swimming areas with depths ranging from 1 to 10 metres, averaging 5 metres. Snorkellers can explore areas of seagrass, which provide habitat for local fish. Entry is via the shore, and conditions include mild currents and visibility between 5 and 15 metres. Be aware of boat traffic, potential entanglement in vegetation, and cold water temperatures, which can drop significantly. Facilities at the park include parking, toilets, showers, a rinse station, and a cafe.

The William Barnum is a freshwater shipwreck located in the Straits of Mackinac. Resting at depths between 15 and 23 metres, the site is accessible only by boat. Divers experience visibility ranging from 10 to 30 metres with mild currents. Due to cold water temperatures that can drop to near freezing, a drysuit is strongly recommended. The wreck structure presents potential entanglement risks and sharp debris, requiring careful buoyancy control and equipment management. This site is suited for intermediate divers who are prepared for the challenges of cold-water diving. Typical dive times are approximately 40 minutes.

The William H. Barnum is a shipwreck located in the Straits of Mackinac. This freshwater site sits at depths ranging from 18 to 23 metres, with an average depth of 20 metres. Access is by boat only, as the wreck lies approximately 8,851 metres from the nearest shore. Divers should be prepared for cold water conditions, with temperatures fluctuating between 1 and 15 degrees Celsius throughout the year; bottom temperatures often remain between 4 and 6 degrees Celsius even in August. Visibility is variable, ranging from 1 to 24 metres. Hazards include the overhead environment of the wreck, potential for entanglement, deep water, and low visibility.

The Sandusky is a wooden schooner located in the Straits of Mackinac Shipwreck Preserve. Resting at depths between 21 and 26 metres, this site is accessible only by boat. Divers encounter mild currents and variable visibility ranging from 1 to 6 metres. Due to the cold water temperatures, which fluctuate between 1 and 15 degrees Celsius, a drysuit is strongly recommended. The wreck presents an overhead environment with potential entanglement hazards, requiring careful navigation and the use of a torch. Divers must manage depth to mitigate nitrogen narcosis and decompression risks. Surface marker buoys are essential due to boat traffic in the area.