The George A. Marsh is a wooden schooner resting upright on the floor of Lake Ontario at a consistent depth of 24 metres. This wreck dive allows for a methodical exploration of the hull structure and rigging. Visibility typically ranges from 5 to 12 metres. Due to the depth and significant temperature fluctuations, which range from 2 to 23 degrees Celsius, this site is suited for intermediate divers. Thermal protection is essential year-round. Access to the site is by boat charter only, and divers should be prepared for cold water conditions and potential currents.

The Cornwall is an artificial reef located 1000 metres offshore in Kingston Harbour, Lake Ontario. This wreck dive sits at depths between 4 and 18 metres, with an average depth of 10 metres. Divers encounter moderate currents and visibility ranging from 4 to 10 metres. The site is suitable for intermediate divers who must manage entanglement risks and boat traffic. Water temperatures fluctuate significantly from 2 to 23 degrees Celsius, necessitating careful exposure protection. The habitat supports various temperate freshwater fish and invertebrates. Access is by boat, and a full-service dive shop provides air fills, equipment rental, and facilities including showers and toilets.

The Comet is a freshwater wreck located in Kingston Harbour, Lake Ontario. Resting at depths between 27 and 40 metres, this site is suited for intermediate divers. The wreck offers a significant vertical range to explore, with visibility ranging from 10 to 61 metres. There is no current, allowing for a controlled pace during the typical 40-minute dive. Due to the depth and potential for entanglement risks around the structure, caution is advised. Water temperatures fluctuate between 2 and 23 degrees Celsius, making a drysuit the practical choice for most of the year. Boat access is required to reach the site, which sits 3218 metres from shore.

Aloha-Effie Mai is a freshwater dive site located in Kingston Harbour, offering a shallow reef experience. The site features depths ranging from 2 to 5 metres, though it drops to 28 metres in deeper sections. Divers experience mild currents and visibility between 10 and 30 metres. Due to the significant seasonal temperature variation, ranging from 2 to 23 degrees Celsius, appropriate thermal protection is required. Access is by boat. Divers should avoid entering cave or swim-through areas unless they possess specific cave training and must maintain buoyancy control to avoid contact with sharp rocks. This site is suitable for beginners.

Horace Taber is a shallow freshwater dive site located within Kingston Harbour, Canada. With depths recorded at approximately 1 to 2 metres, the site is suitable for shallow water activities. Water temperatures fluctuate significantly throughout the year, ranging from a low of 2C in February and March to a high of 23C in August. Due to the very shallow nature of the site, it is primarily accessed from the shore. Divers should be prepared for variable conditions typical of a harbour environment. No specific marine life has been documented at this location.

The George T Davie is a shipwreck located in Kingston Harbour, Lake Ontario. This freshwater dive site spans a depth range of 4 to 29 metres, with an average depth of 25 metres. Access is by boat only, situated 2000 metres from the shore. Divers should be prepared for moderate currents and variable visibility between 6 and 30 metres. Water temperatures fluctuate significantly throughout the year, ranging from 2 to 23 degrees Celsius, with cold temperatures persisting at depth. Due to these conditions and the depth, a drysuit is recommended. A surface marker buoy is essential for boat pick-up, and the site is suited for intermediate divers.

The Munson Wreck is a deep freshwater site located 1540 metres offshore in Kingston Harbour. Resting at depths between 34 and 37 metres, this artificial reef is suited for advanced divers. Visibility is highly variable, ranging from 9 to 30 metres, and the site is subject to significant temperature drops below the thermocline. Surface temperatures can reach 23C, but bottom temperatures remain cold, often between 4C and 9C. Due to these conditions, drysuits are strongly recommended for all dives. Boat access is required to reach the site, and guided tours are available to assist with navigation around the wreck structure.

The City of Sheboygan is a freshwater wreck dive located in Kingston Harbour, Lake Ontario. Resting at depths between 27 and 32 metres, this site is suitable for intermediate divers with experience in deep, cold-water environments. Visibility typically ranges from 5 to 15 metres. Access is by boat only, with the wreck situated 10 kilometres from shore. Divers should be prepared for mild currents and significant temperature drops at depth, where water temperatures remain cold year-round. A drysuit is strongly recommended. The site supports a variety of temperate freshwater fish and invertebrates typical of the region. Always watch for boat traffic when surfacing.