The Run is a fast-flowing tidal channel connecting the lagoon to the Northumberland Strait. This shore-entry site is best suited for intermediate snorkelers who can manage the current. Snorkelers typically perform a drift snorkel through the channel, observing the wharf structures along the way. Water temperatures fluctuate significantly throughout the year, ranging from -1C in the winter months to 20C in August. Due to the tidal nature of the channel, conditions vary, and participants should be prepared for changing water movement. The site offers a unique perspective on the local coastal environment as water flows between the lagoon and the open strait.

Little Harbour Natural Reef on the Nova Scotia Eastern Shore is a shore-entry site featuring a natural rocky reef that extends from a white sand beach. Snorkellers can observe the transition from the sandy bottom to kelp-covered rocks. The site is suitable for beginners, though water temperatures vary significantly throughout the year, ranging from -1C in winter months to 20C in August. Visibility is generally good, allowing for observation of the reef topography. As a shore-accessible location, it offers a straightforward entry for those exploring the local marine environment.

Bothwell Beach at South Lake Run is a coastal site where South Lake drains into the ocean. The topography is defined by shifting sandbars and shallow water. This location is suitable for beginners and offers shore access for snorkelling. Due to the nature of the shifting sandbars, conditions at this site can vary. It is a quiet, shallow environment that provides a straightforward entry point for those looking to explore the coastal interface between the lake and the sea.

North Lake, located on the Nova Scotia Eastern Shore, offers a unique marine environment for advanced snorkellers. Access to this site is strictly by boat, with charters departing from the local harbour. The site is known for its population of Bluefin Tuna, which can reach weights of 1,000lb. Snorkellers observe these predators from specialised platforms within their natural feeding grounds. Conditions at the site include moderate currents, and participants must be prepared for strong current hazards. The habitat supports a variety of temperate marine life, including various fish and invertebrates typical of the region.

Campbell's Cove on the Nova Scotia Eastern Shore features a rugged underwater landscape defined by red sandstone reefs and rocky outcrops. This shore entry site is suited for intermediate snorkelers, with depths ranging from 3 to 9 metres and an average of 6 metres. Conditions are variable, with moderate currents, surf, and potential rip currents. Visibility typically fluctuates between 3 and 8 metres. Water temperatures are cold, ranging from -1C in winter to 20C in August, with a noticeable thermocline. The site supports a variety of temperate marine life and invertebrates typical of the region. Facilities including showers and toilets are available for visitors.

Bluefin Tuna Snorkeling is a specialized boat-based excursion located 8046 metres off the Nova Scotia Eastern Shore. This site involves observing large tuna in open water near the harbour mouth. The environment is challenging, with depths averaging 27 metres and water temperatures ranging from -2C to 10C. Due to the extreme cold, specialized thermal protection is mandatory for all participants. The site is subject to moderate currents and significant boat traffic. Given the presence of sharks and the demanding conditions, this activity is suited for advanced participants. First aid and equipment rental facilities are available to support the excursion.

Knight Point Ledges, located at the base of the cliffs below the Souris East Lighthouse, is a shallow reef site consisting of sandstone debris and sandbars. With depths ranging from 1 to 5 metres, it is primarily used for snorkeling, particularly for searching for sea glass in the shallow wash. The site is accessible from the shore and is suitable for beginners, though conditions vary with visibility between 2 and 10 metres. Divers and snorkellers should be aware of potential hazards including boat traffic, jellyfish, rip currents, and surf. Facilities at the location include toilets and showers.

Souris Breakwater Reefs consist of artificial sandstone structures installed to prevent erosion. These reefs create a sheltered environment with calmer water conditions, providing visibility ranging from 5 to 15 metres. The site is suitable for beginners and is accessed directly from the shore. Depths are shallow, averaging 3 metres with a range of 2 to 5 metres. Facilities at the location include parking, toilets, showers, changing rooms, and a cafe. Due to the marine environment, visitors should be aware of hazards including cold water and strong currents. The water temperature varies significantly throughout the year, requiring appropriate thermal protection.