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.

Stacked Hulls in Kingston Harbour consists of multiple layered wreck structures resting in 3 to 7 metres of water. This site is suited for intermediate divers due to strong, variable currents and significant boat traffic on the surface. Visibility is highly changeable, ranging from 5 to 30 metres. Divers must manage entanglement risks around the wreckage and use a surface marker buoy. Water temperatures fluctuate between 2 and 23 degrees Celsius, necessitating appropriate thermal protection. The site supports a variety of temperate freshwater fish and invertebrates typical of the region. Access is by boat only, located 15 metres from shore.

The Glendora is a wreck site located 1500 metres offshore in Kingston Harbour. Resting at depths between 21 and 24 metres, this freshwater wreck requires boat access. The site presents an overhead environment, necessitating careful navigation and buoyancy control to manage entanglement risks. Divers should be prepared for variable visibility and cold water temperatures, which range from 2C to 23C throughout the year. Due to the depth and structural hazards, this site is suited for intermediate divers with appropriate wreck certifications. Marine life in this habitat includes various temperate freshwater fish and invertebrates typical of the region.

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.

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 Prince Regent is a freshwater wreck dive located in Kingston Harbour. Situated 50 metres from the shore, this site is accessible via a shore entry and is suitable for beginner divers. The wreck lies at a shallow depth ranging from 2 to 4 metres, with an average depth of 3 metres. Divers should be prepared for mild currents and visibility that fluctuates between 3 and 10 metres. Water temperatures vary significantly throughout the year, ranging from 2°C in February to 23°C in August. Due to the nature of the site, primary hazards include cold water and potential entanglement. Parking is available for visitors.