Drumnakill Point is a rocky headland located at the southern end of the bay near the ruins of an ancient church. This reef site features boulder slopes that provide a habitat for various invertebrates. Snorkelling here is suitable for intermediate participants due to the strong currents present in the area. Depths range from 1 to 10 metres, with an average of 5 metres. Access is via the shore, and parking is available nearby. Visibility typically fluctuates between 3 and 10 metres. Species recorded around this area include seals, wrasses, European spiny lobsters, rock crabs, sea stars, brittle stars, snails, European green crabs, rockpool prawns, shannies, hard corals, and sea squirts.

Fair Head Base, located in the Coal Mine Area of Strangford Lough, is a dramatic site situated beneath 600ft cliffs. The underwater topography is defined by massive fallen boulders and deep kelp forests, creating a rugged environment. Due to the challenging nature of the terrain and the exposed location, this site is suited for advanced snorkellers. Access is possible via both shore and boat entries. Water temperatures in this marine environment vary throughout the year, ranging from 8C in March to 14C during the late summer and autumn months.

Fair Head Base is a boat-access site situated at the foot of massive dolerite cliffs. The underwater topography is defined by large boulders and steep drop-offs. These structures are covered in a dense faunal turf consisting of sponges and bryozoans. Due to the nature of the terrain and the exposed location, this site is suitable for advanced snorkellers. Water temperatures at this location vary between 8C and 14C throughout the year. Access is strictly by boat, and the site offers a challenging environment for those exploring the base of these significant geological formations.

Fair Head is a dramatic snorkel site situated at the base of Northern Ireland's tallest cliffs. The underwater topography features massive submerged boulders and dense kelp forests, mirroring the vertical columns found above the surface. Divers and snorkellers navigate through deep gullies and canyons created by the rock formations. Due to the challenging nature of the environment and the variable conditions, this site is suitable for advanced snorkellers. Access is exclusively by boat. Water temperatures fluctuate between 8C and 14C throughout the year, requiring appropriate thermal protection for extended time in the water.

Portaleen Harbour at Torr Head is a rugged coastal site featuring deep canyons and underwater drop-offs. The topography is defined by extensive kelp forests and rocky reef structures. Entry is via a small slipway at the harbour. This site is suited for advanced snorkelers due to the presence of strong currents in the area. Water temperatures fluctuate between 8C and 14C throughout the year. As a wild coastal environment, it offers a challenging experience for those comfortable with variable marine conditions.

Loughan Bay, located south of Torr Head in Strangford Lough, offers a remote snorkelling experience for advanced practitioners. Access requires a steep scramble down to the foreshore, where the topography consists of wave-washed metamorphic rock platforms and deep rock pools. Water temperatures at this site range from 8C in March to 14C between August and October. Due to the exposed nature of the coastline and the challenging entry, this site is rated 2/5 for snorkelling. It is best suited for those comfortable with rugged, wild coastal environments and variable sea conditions.

Pans Rock is a rocky outcrop situated at the eastern end of Ballycastle Beach in Strangford Lough. Accessible via a wooden footbridge, the site features a series of gullies and rock pools. It is best explored at high tide when the water covers the inner reefs. The site is suitable for intermediate divers and snorkellers, with depths ranging from 0 to 2 metres and an average depth of 1 metre. Entry is from the shore, though visitors should be aware of strong currents and surf conditions. Parking is available nearby for convenience.

Runabay Head Shoreline is a rugged reef site located between Torr Head and Cushendun. The topography features dramatic underwater drop-offs and large boulders. This site is suited for advanced divers due to strong currents and potential surf conditions. Entry is via the shore, and visibility typically ranges from 20 to 40 metres. Depths begin at 8 metres and extend deeper. Water temperatures fluctuate between 8C and 14C throughout the year. Facilities available at the site include parking, toilets, and showers. Snorkelling is possible but rated 2/5 due to the challenging conditions.