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.

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.

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.

Petoskey State Park in the Straits of Mackinac offers shallow freshwater snorkeling along a mile-long beach. The site is known for its rocky topography and geological formations, providing opportunities to observe fossilised coral, known locally as Petoskey stones. Depths range from 1 to 5 metres, with an average of 3 metres, making it suitable for beginners. Entry is via the shore, and conditions feature mild currents with visibility typically between 5 and 15 metres. Water temperatures vary significantly throughout the year, ranging from 1 to 21 degrees Celsius. Facilities available at the park include parking, toilets, showers, changing rooms, a rinse station, equipment rental, and a cafe.

The Metropolis is a 125-foot schooner that ran aground in 1886. This site features the shallow remains of the vessel, with a debris field scattered in approximately 2 to 3 metres of water. Located 91 metres from the shore, the site is accessible by both boat and shore entry. Divers and snorkellers can expect mild currents and visibility ranging from 3 to 25 metres. Due to the location in Lake Michigan, water temperatures fluctuate significantly between 2C and 21C, and divers should be prepared for cold water, thermoclines, and potential entanglement hazards. Boat traffic is also a concern in the area.

Car Bodies is an artificial reef located in the Straits of Mackinac, consisting of submerged vehicle structures. The site sits at a constant depth of 5 metres, providing a calm environment suitable for beginner divers. Access is by boat only. Visibility typically ranges from 5 to 10 metres. Water temperatures fluctuate significantly throughout the year, ranging from 2 to 21 degrees Celsius. Divers should be aware of potential entanglement risks from the structure and sharp edges on the debris. Appropriate thermal protection is required to manage the cold freshwater conditions, and protective gear is recommended to avoid injury from the artificial materials.

Haserot Beach Junk Pile is a unique artificial reef located at the tip of Old Mission Peninsula in the Straits of Mackinac. Created in the 1950s, the site features a collection of submerged items including cars, boats, and a refrigerator. Divers and snorkellers can explore these structures at depths ranging from 2 to 7 metres, with an average depth of 5 metres. Conditions are generally mild with visibility between 5 and 15 metres. The site is accessible by both shore and boat, and facilities including parking, toilets, showers, and equipment rental are available nearby. Typical dives last approximately 40 minutes.

Elk Rapids Rotary Park provides shore access to the freshwater environment of Elk Lake. Divers and snorkellers can explore old dock remains and rocky structures that serve as artificial reefs. The site is suitable for intermediate divers, with depths typically ranging from 2 to 3 metres, though average depths reach 6 metres. Conditions vary significantly, with visibility between 5 and 15 metres and water temperatures fluctuating from 2C to 21C depending on the season and depth. A pronounced thermocline exists, keeping deeper water cold. Hazards include cold water and potential entanglement. Facilities at the park include parking, toilets, showers, changing rooms, and a rinse station.