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.

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.

Forty Mile Creek Park is situated where the creek meets Lake Ontario, offering a unique environment defined by small rough-sand beaches and a rocky ridge. This site is suitable for intermediate snorkelers who can navigate the variable conditions of the lake and creek interface. Water temperatures fluctuate significantly throughout the year, ranging from 3C in the winter months to a peak of 21C during July and August. Access to the water is via the shore. Due to the nature of the environment, visitors should be prepared for changing water conditions and temperatures when planning their visit to this Niagara Peninsula location.

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.

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.

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.

The Confederation Park Mystery Steamer is a pre-Confederation sidewheel steamer, believed to be the City of Hamilton, resting in shallow water off the Niagara Peninsula. Located approximately 80 metres from the shore, the wreck features visible engine components and remnants of a wooden hull structure. Due to the shallow depth, the site is accessible via a shore entry, though it is best suited for intermediate snorkelers. Water temperatures fluctuate significantly throughout the year, ranging from 3C in winter to 21C during the peak summer months of July and August. Visibility varies, but the structure remains a distinct feature for those exploring this freshwater site near Stoney Creek.