Carnlough Bay is a reef site located in Northern Ireland, offering shore access via a concrete slope equipped with a handrail. The topography consists primarily of a sandy beach, with rocky patches situated at the northern and southern ends of the bay. Conditions are generally mild, with water temperatures ranging between 8C and 14C throughout the year. The site is suitable for beginners and provides facilities including parking, a cafe, toilets, showers, and changing rooms. Due to the water temperature, which does not exceed 20C, the site is not considered suitable for comfortable swimming year-round.

Ringfad, also known as Tommy's Port, is a rocky inlet within Strangford Lough that features a combination of reef topography and dense kelp forests. This shore-entry site is suited for intermediate divers, with typical dives lasting around 45 minutes. Conditions are characterised by mild currents and water temperatures ranging from 8C to 14C throughout the year. Divers should be aware of sharp coral present in the area. Parking is available for visitors, and the site is also suitable for snorkelling, holding a rating of 3 out of 5.

Glenarm Marina offers a sheltered snorkelling experience suitable for beginners. Access is via the slipway located in front of the boathouse. The site features a mix of artificial and natural reef structures with depths ranging from 1 to 5 metres, averaging 3 metres. Snorkellers must remain close to the shoreline to avoid the active boating channel. Water temperatures fluctuate between 8C and 14C throughout the year. Species recorded around this area include wrasses, catsharks, brittle stars, rock crabs, sea stars, shrimp, tube worms, snails, European green crabs, rockpool prawns, shannies, and sea squirts. Facilities including parking, toilets, and showers are available on-site.

Madman's Window Shore is a secluded pebbly beach located south of Glenarm along the coastal path in Strangford Lough. The site features a mix of sandy patches and rocky outcrops situated directly below the prominent Madman's Window rock formation. Access is via the shore, making it suitable for snorkelers looking to explore the coastal topography. Water temperatures at this location range from 8C to 14C throughout the year. Due to the variable nature of the coastal environment, conditions can fluctuate, and visitors should exercise caution when entering the water from the pebbly shoreline.

Garron Point in Strangford Lough offers a shore-accessible dive and snorkel site defined by its dramatic limestone and basalt ledges. The underwater topography consists of rocky reefs and deep gullies, reaching depths of up to 10 metres. Conditions at this site are variable, with moderate currents and visibility typically ranging between 5 and 10 metres. Due to the presence of surf, cold water temperatures between 8C and 14C, and moderate currents, this site is best suited for intermediate divers. Parking is available near the entry point. The site provides a rugged coastal environment for both diving and snorkelling activities.

Red Bay Shore in Strangford Lough offers a varied underwater landscape featuring a kelp-covered boulder wall that transitions into a sandy seabed. This site is suitable for beginners, with depths ranging from 3 to 10 metres and an average depth of 5 metres. Access is via old concrete steps located on the Garron Road, with parking available nearby. Divers should be aware of cold water temperatures, which fluctuate between 8C and 14C throughout the year, as well as potential rip currents and surf conditions. The site is also suitable for snorkelling, holding a rating of 3 out of 5.

Cushendall Gullies in Strangford Lough features a series of rocky gullies reaching depths of approximately 6 metres. This shore-entry site is best explored by following the rocky shoreline north from the entry point. Snorkellers can observe a variety of marine life, including snails, which are very common, particularly in August. Other species recorded at the site include European green crabs, rock crabs, brittle stars, sea stars, shannies, and rockpool prawns. Water temperatures at this location vary between 8C and 14C throughout the year. Due to the nature of the terrain, this site is suited for intermediate-level snorkellers.

Cushendall Boat Park offers a sheltered shore entry point situated near the local RNLI station and sailing club. This site is suitable for beginners, providing access to rocky edges and kelp fringes that extend towards Gilbert Rock. Water temperatures at this marine location fluctuate between 8C and 14C throughout the year. Snorkelers may encounter various marine life, including snails, which are very common, particularly in August. Other species recorded at the site include European green crabs, rock crabs, brittle stars, sea stars, rockpool prawns, and shannies. The site provides a manageable environment for those developing their snorkelling skills in a coastal setting.