Little Chance Harbour in Passamaquoddy Bay is a rocky harbour serving as a marine research site. Divers access the water from the shore over a rocky entry point. The underwater topography consists of kelp-covered boulders interspersed with sandy patches. Conditions at this site are variable, with moderate currents and low visibility common. Water temperatures are cold, ranging from 3C to 15C throughout the year, necessitating the use of dry suits. Due to the challenging environment, including potential surf and cold water, this site is suited for intermediate divers. Snorkelling is possible but limited, with a rating of 2/5.

Gooseberry Cove is situated at the seaward boundary of the Musquash Estuary Marine Protected Area in Passamaquoddy Bay. The site features rocky headlands, reefs, and stands of seagrass. It serves as a primary location for biodiversity monitoring, supporting populations of invertebrates and juvenile fish. Access is via the shore, with parking available nearby. Conditions are challenging, with moderate to strong currents, potential rip currents, and surf. Water temperatures are very cold, ranging from 3C to 15C throughout the year. Due to these environmental factors, this site is suitable for intermediate divers and snorkellers. Divers should be prepared for cold water and potential entanglement hazards.

Butler Creek Beach is a secluded pocket beach located within the Musquash Estuary MPA. Accessible via a side trail from the Five Fathom Hole hiking path, this shore entry site features a reef environment. Snorkellers can observe the intertidal zone and the general kinds of temperate marine life and invertebrates expected in this habitat. Conditions are variable with strong currents present, and the site is suited for advanced snorkellers only. Water temperatures range from 3C to 15C throughout the year. Due to the challenging conditions and environment, this site carries a snorkel rating of 2 out of 5.

Black Beach in Passamaquoddy Bay is a distinctive site known for its rare black sand composed of graphite deposits. The rocky shoreline provides a unique environment for shore-based snorkeling. This site is suited for intermediate snorkelers, with depths ranging from 1 to 5 metres and an average of 3 metres. Conditions vary, with visibility typically between 3 and 8 metres and moderate currents. The water is cold, ranging from 3C to 15C throughout the year. Hazards include boat traffic, cold water, low visibility, strong currents, surf, and surge. Parking is available at the site, which offers a protected cove environment for exploration.

Boyles Cove in Passamaquoddy Bay is a rocky reef site offering shore access for snorkellers. The area features calm water inlets that provide protection from the energetic swells of the Bay of Fundy. The site is suitable for beginners, though water temperatures remain cold throughout the year, typically ranging between 3°C and 15°C. Divers and snorkellers should be aware of potential hazards including jellyfish, sea urchins, strong currents, and surf. The rocky shoreline allows for observation of intertidal life in the shallow areas. Due to the cold water conditions, appropriate thermal protection is necessary for all in-water activities.

Carrying Cove in Passamaquoddy Bay is a popular training site featuring a combination of natural reef and an artificial structure known as Reid's Reef, situated near the rocky corner of the cove. This shore-entry site is suitable for beginners, offering depths between 2 and 9 metres with an average of 5 metres. Conditions include mild currents and visibility ranging from 3 to 5 metres. Water temperatures fluctuate significantly throughout the year, from 3°C in March to 14°C in September. Divers should remain aware of local boat traffic and potential surf conditions. Parking is available at the site, which supports both diving and snorkelling activities.

Tommy's Cove, also known as Carrying Cove, is a shallow site in the Bay of Fundy suitable for beginners. The topography consists of a natural reef complemented by an artificial reef block site. Divers and snorkellers can expect depths ranging from 0 to 9 metres, with an average depth of 5 metres. Access is via the shore, and conditions typically feature mild currents and visibility between 3 and 5 metres. Water temperatures are cold, fluctuating between 4C and 16C throughout the year. Facilities available at the site include parking, showers, toilets, changing rooms, a rinse station, air fills, equipment rental, a cafe, first aid, a dive shop, and boat charter services.

Saints Rest Beach in Passamaquoddy Bay offers a rocky reef environment suitable for intermediate snorkelers. Access is via the shore, with depths ranging from 1 to 6 metres and an average depth of 3 metres. The site is best explored during high slack tide, as conditions are influenced by moderate currents and surf. Visibility is limited, typically between 2 and 5 metres, and water temperatures are cold, ranging from 3°C to 15°C throughout the year. Due to these conditions, appropriate thermal protection is essential. Facilities at the site include parking, toilets, and showers. Typical snorkel sessions last approximately 30 minutes.