Shell Park on the Niagara Peninsula offers a unique shoreline composed of crushed shells and sand. This freshwater site is suitable for beginners, with depths ranging from 1 to 5 metres and an average depth of 3 metres. Entry is via the shore into a sheltered cove that provides calmer conditions than nearby open beaches. Divers and snorkellers should be aware of moderate currents, surf, and low visibility. Facilities available at the site include parking, toilets, showers, and a rinse station. Water temperatures fluctuate significantly throughout the year, ranging from 3C in the winter months to 21C during the peak of summer in July and August.

Burloak Waterfront Park offers shore access to Lake Ontario via multiple designated entry points known as Windows to the Lake. The shoreline consists of a mix of pebbles and larger stones, providing a varied substrate for observation. This site is suitable for beginners looking for a casual snorkelling experience. Water temperatures fluctuate significantly throughout the year, ranging from 3C in the winter months to 21C during the peak of summer. Facilities at the park include parking and toilets for visitor convenience. Given the nature of the shoreline and the environment, this location is rated 2/5 for snorkelling.

Coronation Park in Oakville offers a freshwater snorkelling experience along the Niagara Peninsula. The site features a small sandy cove that transitions into a rocky shelf, providing a varied underwater topography. Conditions are generally suitable for beginners, with mild currents and visibility ranging from 3 to 10 metres. Water temperatures fluctuate significantly throughout the year, peaking at 21C during the summer months. Shore access is straightforward, supported by facilities including parking, toilets, showers, and changing rooms. Due to the potential for cold water and surf, appropriate thermal protection and careful monitoring of local conditions are recommended for all visitors.

The Jesse Anne is a steel ship wreck located in the Niagara Peninsula, Canada. This site features a flat deck at 18 metres, with the vessel measuring 60 metres in length and 10 metres in width. Divers access the wreck by boat, as it lies approximately 2000 metres from shore. The site is suited for intermediate divers, with depths ranging from 18 to 23 metres. Conditions include mild currents and visibility between 5 and 15 metres. Due to the cold water temperatures, which range from 3 to 15 degrees Celsius, appropriate thermal protection is required. Species recorded around this area include alewife, snails, trout, white sucker, common carp, round goby, and rainbow trout.

Paletta Lakefront Park offers a freshwater snorkelling experience along a rocky shoreline behind the historic Paletta Mansion. The underwater terrain features large boulders and shale shelves, with depths ranging from 2 to 15 metres and an average of 8 metres. This site is suited for intermediate snorkellers due to variable conditions, including low visibility and thermoclines. Water temperatures fluctuate significantly throughout the year, peaking at 21C in summer and dropping to 3C in winter. Access is via a shore entry. Divers and snorkellers should remain aware of boat traffic in the area. Facilities at the park include parking, toilets, and the availability of guided tours.

The Oakville wreck is a work barge located in the Niagara Peninsula. The vessel rests on a muddy bottom at a depth of 22 metres, with its flat, hard deck situated at 18 metres. This site is suitable for intermediate divers and offers straightforward navigation across the structure. Divers can access the wreck via boat or shore. Conditions include mild currents and visibility ranging from 10 to 20 metres. Water temperatures are consistently cold, typically remaining around 5 degrees Celsius even during summer months. Divers should be prepared for cold water and potential currents. Facilities including air fills, equipment rental, and parking are available nearby.

Tannery Park is a freshwater dive site located near the mouth of Sixteen Mile Creek in Oakville. This artificial reef features a mix of natural shoreline and man-made structures, offering a transition zone between the creek and the open lake. The site is suitable for intermediate divers, with depths ranging from 1 to 5 metres and an average depth of 3 metres. Divers should expect mild currents and must be prepared for extremely cold water temperatures, which range from 3C to 21C throughout the year. Proper thermal protection is essential to mitigate the high risk of hypothermia. Shore access is available, with facilities including parking, toilets, and showers on-site.

Sioux Lookout Park in the Niagara Peninsula offers a freshwater snorkelling experience along a pebble beach. The site features a rocky shoreline and submerged concrete slabs that serve as artificial reef structures. Snorkellers can explore depths starting from 2 metres. The site is accessible via a shore entry and is suitable for beginners, though conditions include mild currents. Facilities available at the park include parking, toilets, showers, and a rinse station. Water temperatures fluctuate significantly throughout the year, ranging from 3C in winter to 21C during the peak summer months of July and August.