Arisaig Provincial Park, known for its Fossil Cliffs, offers a unique opportunity to explore 400-million-year-old Silurian rock formations. The site features a rocky bottom that provides habitat for local marine life. Divers and snorkellers should be prepared for strong currents and surf, making this an intermediate-level site. Access is via the shore. Water temperatures fluctuate significantly throughout the year, ranging from -1C in winter to 20C in August. The park provides comprehensive facilities, including parking, toilets, showers, changing rooms, a rinse station, and access to air fills, equipment rental, and guided tours.

Cribbons Rock Beach on the Nova Scotia Eastern Shore is defined by prominent brown rock outcroppings that extend into the water. These formations create natural barriers and crevices along the reef. This site is suitable for intermediate snorkellers who can manage shore entries and variable conditions. Water temperatures are generally cold, ranging from -1C in winter to 20C in August. Divers and snorkellers should be aware of potential hazards including strong currents, rip currents, surf, surge, and cold water. Sea urchins are also present in the area. Parking and toilets are available at the site.

Pomquet Beach is a sheltered, U-shaped inlet on the Nova Scotia Eastern Shore, known for having some of the warmest waters in the province. The site features extensive seagrass beds, making it a suitable location for snorkelling. With depths ranging from 1 to 5 metres and an average of 3 metres, the area offers mild currents and calm conditions ideal for beginners. Shore entry is straightforward, and the site is well-equipped with parking, toilets, showers, and changing rooms. Water temperatures fluctuate significantly throughout the year, peaking at 20C in August and dropping to -1C during the winter months.

Murray Harbour is an offshore reef site located approximately 16 kilometres from the Nova Scotia Eastern Shore. This boat-access location features deep waters with depths ranging from 80 to 100 metres, averaging 90 metres. Divers and snorkellers encounter mild currents and visibility typically between 10 and 25 metres. Water temperatures are cold, fluctuating between -1C and 12C throughout the year. Due to the significant depth and environmental conditions, this site is suited for advanced divers. Hazards at this location include jellyfish and sharks. Local facilities provide air fills, boat charters, guided tours, and gear storage to support the 120-minute typical dive duration.

Roy Island on the Nova Scotia Eastern Shore offers a rocky reef environment suited for beginner snorkelers. Located near the eastern end of the beach, the site features shallow depths ranging from 1 to 5 metres. Water temperatures in this part of the Northumberland Strait are relatively warm for Atlantic Canada, peaking in August. Divers and snorkelers should be aware of local boat traffic and potential surf conditions. Visibility at the site typically fluctuates between 3 and 10 metres. Shore access is available, supported by local facilities including parking, toilets, showers, and changing rooms.

Murray Head Cliffs features a rugged underwater landscape defined by sandstone cliffs, fallen boulders, and kelp forests. Located near Cape Bear, this site offers a challenging environment for snorkelers due to moderate currents, surge, and potential rip currents. The topography is complex, requiring advanced skill levels for safe navigation. Water temperatures fluctuate significantly throughout the year, ranging from -1C in late winter to 20C in August. Access to the water is possible from both shore and boat. Given the environmental conditions and physical hazards, this site is best suited for experienced snorkelers comfortable with variable marine conditions.

Wharf Beach on the Nova Scotia Eastern Shore is a reef site offering snorkelers access to depths between 2 and 10 metres, with an average depth of 5 metres. The site features both shore and boat entry points and is suited for intermediate snorkelers. Conditions vary, with visibility ranging from 3 to 10 metres and mild currents present. Water temperatures fluctuate significantly throughout the year, ranging from -1C in winter to 20C in August. Visitors should be aware of potential hazards including rip currents, strong currents, and surf. Facilities at the location include parking, toilets, changing rooms, and the availability of guided tours.

Guernsey Cove on the Nova Scotia Eastern Shore features a rugged landscape defined by red cliffs and a rocky shoreline. This site offers a mix of reef and seagrass habitats accessible via a shore entry. Conditions are generally suitable for beginners, though divers should be aware of potential hazards including surf, rip currents, and jellyfish. Water temperatures fluctuate significantly throughout the year, ranging from -1C in winter to 20C in August. The site is rated 3/5 for snorkelling, providing a varied environment for those exploring the coastal waters of Canada.