Murray Street Park in Grimsby offers shore access to Lake Ontario. This site is suitable for beginners, though divers should be prepared for cold water and low visibility, which typically ranges from 3 to 6 metres. A thermocline is often present, with temperatures below 9 metres dropping significantly compared to surface levels. Divers must remain aware of boat traffic in the area. The entry point is rocky, requiring caution when entering or exiting the water. Parking is available at this residential lakefront park, making it a convenient location for a quick dive in the Great Lakes region.

Grimsby Beach offers a unique freshwater dive experience centred on the submerged wooden pilings of a historic ferry pier. These structures, which once served steamships, now function as an artificial reef. The site is accessed from the shore and is best suited for intermediate divers due to potential hazards including boat traffic, surf, low visibility, and cold water. Water temperatures fluctuate significantly throughout the year, ranging from 3C in winter to 21C in summer. Divers should be prepared for cold water conditions outside of the peak summer months to avoid hypothermia. Facilities at the site include parking, toilets, showers, and changing rooms.

Casablanca Beach on the Niagara Peninsula offers a quiet freshwater snorkelling environment along the Great Lakes Waterfront Trail. The site features a shoreline composed of a mix of sand and stone. Water temperatures fluctuate significantly throughout the year, ranging from 3C in the winter months to 21C during July and August. Snorkellers should be aware of the potential for cold water and low visibility conditions. Access is via a shore entry, and the site provides basic facilities including parking and toilets. It is suitable for beginners seeking a tranquil experience away from larger crowds.

Fifty Point Conservation Area on the Niagara Peninsula offers a freshwater environment featuring a mix of sand and stone lakebed. Suitable for beginners, this site provides shore access for both diving and snorkelling. Conditions vary, with visibility typically ranging from 5 to 15 metres. Water temperatures fluctuate significantly throughout the year, reaching up to 21C in the summer months. Divers and snorkellers should be prepared for cold water, which remains a primary hazard at this location. On-site facilities include parking, toilets, showers, and changing rooms to support visitors.

Cherry Beach, located at the end of Millen Road in Stoney Creek, offers a shallow freshwater snorkelling experience suitable for beginners. The site features a topography of sand mixed with submerged rock groynes, providing a simple layout for a quick shore entry. Depths range from 1 to 5 metres, with an average of 3 metres. Conditions vary significantly, with water temperatures fluctuating between 3C and 21C throughout the year. Divers and snorkellers should be prepared for potential hazards including cold water, surge, low visibility, and the presence of jellyfish. Facilities at the site include parking, toilets, and showers.

La Grande Hermine is a 140-foot replica shipwreck located in the shallow waters of Jordan Harbour on the Niagara Peninsula. Situated approximately 15 metres from the shore, the wreck lies at depths ranging from 1 to 5 metres, with an average depth of 3 metres. The site is accessible by both shore and boat, though snorkelers should maintain a safe distance from the structure as it is currently being dismantled for safety. Conditions include moderate currents and variable visibility. Water temperatures fluctuate significantly throughout the year, ranging from 4°C in winter to 22°C in August. Parking is available at the site.

The Dredge Barges consist of the remains of three wooden barges that sank during the construction of a local water intake pipe. Located 50 metres from the shore near the Grays Road entry point, the site sits in depths ranging from 5 to 9 metres, with an average depth of 7 metres. This freshwater site is suitable for advanced divers due to moderate currents, potential entanglement hazards, and variable visibility between 5 and 20 metres. Snorkellers may view the upper sections of the wrecks during periods of high clarity. Divers should be prepared for cold water temperatures and a distinct thermocline, as well as potential boat traffic in the area.

The Confederation Wreck is a shallow freshwater site located 50 metres from shore in the Niagara Peninsula. Resting at an average depth of 3 metres, this wreck is accessible for beginner divers. The site features a structure that requires careful navigation to avoid entanglement risks. Divers should be prepared for cold water temperatures ranging from 3 to 21 degrees Celsius, often necessitating a drysuit. Visibility is typically around 5 metres. Shore entry requires caution due to potential surf and shore break conditions. Divers are advised to carry a cutting tool and monitor the moderate currents throughout the 30-minute dive.