The 17 Fathom Wreck is a deep-water site located 19 kilometres offshore in Lake Erie, accessible only by boat. Resting at a depth of 32 to 33 metres, this wreck requires advanced diving skills and strict buoyancy control. Divers encounter mild currents and visibility ranging from 5 to 15 metres. Water temperatures fluctuate significantly throughout the year, from 1 degree Celsius in winter to 23 degrees Celsius in August, necessitating careful thermal protection planning. Due to the depth, cold water, and potential for entanglement within the structure, this site demands high levels of wreck-diving discipline and experience.

The Pascal P. Pratt is a shipwreck located in the Niagara Peninsula of Lake Erie, serving as an artificial reef. The site sits at depths ranging from 6 to 30 metres, with some areas reaching 45 metres. Divers access the wreck by boat, encountering mild currents and visibility between 5 and 15 metres. Due to the depth and potential for entanglement, this site is suited for intermediate divers with appropriate overhead-environment training. Water temperatures fluctuate significantly throughout the year, ranging from 1 to 23 degrees Celsius, necessitating careful thermal planning. Always monitor your depth and remain close to the boat entry point during your dive.

Bluff Bar is a remote sandbar located in the Outer Bay of the Great Lakes, Ontario. This freshwater site features a sandy environment that rises from depths of approximately 8 metres to just inches below the surface. Snorkellers typically experience depths ranging from 1 to 8 metres, with an average of 5 metres. Access to this site requires a boat, as it is situated 3000 metres from the shore. Conditions vary, with mild currents and potential hazards including boat traffic, entanglement, low visibility, and surge. The site is suited for intermediate snorkellers, with a typical visit lasting 45 minutes.

The Wilma Wreck is a freshwater dive site located in the Niagara Peninsula region of Lake Erie. This wreck sits at depths ranging from 3 to 74 metres, with an average depth of 23 metres, making it suitable for intermediate divers. Visibility typically ranges between 5 and 15 metres. Access is by boat only, located approximately 16 kilometres from shore. Divers should be prepared for mild currents and potential entanglement hazards within the structure. Due to significant temperature fluctuations between 1 and 23 degrees Celsius, drysuits are strongly recommended. The site supports a variety of temperate freshwater fish and invertebrates typical of the Great Lakes habitat.

The Atlantic is a deep-water wreck located 4828 metres offshore in Lake Erie, resting at depths between 41 and 50 metres. This site is strictly for advanced divers, requiring wreck certification and precise buoyancy control. The wreck structure offers an overhead environment with associated entanglement risks. Visibility is highly variable, ranging from 3 to 18 metres. Divers must contend with mild currents and significant thermal challenges, as bottom temperatures often remain between 3 and 10 degrees Celsius even during summer months. A drysuit with appropriate undergarments is essential for this 40-minute dive. Access is exclusively by boat, and divers should confirm operator availability locally before planning.

Ryerson's Island Shallows is a freshwater site located in the Inner Bay of the Great Lakes and Ontario, Canada. This area features shallow, protected waters surrounding a small island, characterised by a mix of reef and seagrass habitats. The site is suitable for beginners and requires boat access. Water temperatures fluctuate significantly throughout the year, ranging from 1C in the winter months to 23C in August. Facilities available at the site include parking, toilets, and showers. The current is generally mild, making it a manageable location for snorkelling activities.

Pottahawk Point is a shallow sandbar located at the boundary of the Inner and Outer Bays in the Great Lakes of Ontario. This site features sandy flats and weed beds, offering a shallow environment for snorkelers with depths ranging from 1 to 5 metres. Access is by boat only, as the site is situated 8 kilometres from the shore. Conditions vary, with visibility typically between 3 and 10 metres and mild currents. Hazards include boat traffic, surge, and cold water temperatures. The site is suitable for beginners, though water temperatures fluctuate significantly throughout the year, peaking in late summer.

The Cecil J is a freshwater wreck dive located in Lake Erie, accessible only by boat. The site sits at depths ranging from 5 to 30 metres, with an average depth of 15 metres. Divers encounter mild currents and visibility that fluctuates between 5 and 20 metres. Due to the wreck structure, entanglement is a primary hazard, requiring careful buoyancy control. Water temperatures vary significantly throughout the year, from 1C in winter to 23C in summer, and a thermocline is present. A drysuit or thick wetsuit with hood and gloves is recommended to manage the cold water. Divers should check local conditions for visibility shifts before departure.