Rossglass Beach in Strangford Lough offers a relaxed shore-entry snorkelling experience suitable for beginners. The site features an expansive beach with numerous rock pools and shallow channels that become exposed at low tide. Divers and snorkellers can explore depths ranging from 1 to 5 metres, with an average depth of 3 metres. Conditions are generally mild, though visibility varies between 3 and 10 metres. Water temperatures remain cool, fluctuating between 9C and 15C throughout the year. Species recorded around this area include various crabs, sea stars, brittle stars, and occasionally larger marine life such as seals or octopuses. Be aware of jellyfish, which are a known hazard in these waters.

Tyrella is a shore-entry snorkel site located in Strangford Lough, Northern Ireland. The area features rocky reefs at the eastern end of the beach, providing a stable habitat that transitions from the main sandy bathing zones. The site is suitable for beginners, with depths ranging from 1 to 10 metres and an average depth of 5 metres. Conditions vary, and snorkellers should be aware of potential surf and strong currents in the area. Facilities available at the beach include parking, toilets, showers, changing rooms, and first aid services. The water temperature fluctuates between 8C and 15C throughout the year.

The Water Rock in Strangford Lough is a shallow reef and artificial reef site suitable for beginners. Access is via a shore entry at the slipway of the historic stone pier. The site is shallow, with depths ranging from 0 to 5 metres and an average of 2 metres. It is best explored at high tide, as the harbour dries out significantly at low water. Conditions include mild currents and visibility between 3 and 10 metres. Species recorded around this area include gray seals, curled octopus, wrasses, catsharks, squat lobsters, common lobsters, sea slugs, gurnards, orange-clubbed nudibranchs, giant jellyfish, flatworms, conger eels, crabs, and sea stars. Hazards include entanglement and low visibility.

Killough Harbour near Coney Island is a sheltered marine site located within Strangford Lough. The topography features a combination of sandy areas and rocky ledges surrounding the island, providing a protected environment for snorkellers. Water temperatures in this region fluctuate between 9C and 15C throughout the year. Access to the water is via the shore, making this a suitable location for beginners. The site is rated 3/5 for snorkelling, offering a calm setting for exploring the local underwater terrain.

Water Rock is a prominent rocky outcrop located at the entrance to Killough Bay in Strangford Lough. This site features underwater reefs characterised by mixed algae and dense kelp forests. Divers and snorkellers can explore depths ranging from 2 to 18 metres. Access is by boat, as the site is situated 400 metres from the shore. Conditions include moderate currents and water temperatures between 9C and 15C. Species recorded around this area include grey seals, curled octopus, wrasses, conger eels, catsharks, and various crustaceans such as common lobsters and squat lobsters. Due to boat traffic, divers should exercise caution during their 45-minute dives.

Phennick Point in Strangford Lough offers a sheltered environment for snorkelling, featuring rocky inlets, a sandy seabed, and scattered boulders. This site is well-suited for beginners due to the protection from wind and mild tidal currents. Snorkellers can expect depths ranging from 1 to 3 metres, with an average of 2 metres. Visibility varies between 2 and 8 metres. Access is via the shore, and the site is equipped with nearby facilities including parking, toilets, showers, and equipment rental. Be aware of boat traffic in the area and the risk of hypothermia due to water temperatures ranging from 9 to 15 degrees Celsius.

Ardglass Gullies in Strangford Lough features a series of underwater gullies carved into folded sedimentary rock. The site includes a small sea cave, creating a complex topography for snorkellers. The walls of the gullies are covered in kelp, sponges, and anemones. Water temperatures at this site range from 9C to 15C throughout the year. Due to the presence of an overhead environment, surf, and cold water, this site is recommended for intermediate snorkellers. Entry is via the shore. Snorkellers should be prepared for variable conditions typical of this marine environment.

Keel Point is situated at the mouth of the Dundrum Inner Bay channel within Strangford Lough. This shore-entry site is rated for intermediate snorkelers due to the tidal nature of the channel. Water temperatures fluctuate between 8C and 15C throughout the year, requiring appropriate thermal protection. The area is a known haul-out site for a large colony of seals, which are frequently observed swimming in the channel during high tide. Snorkelers should be mindful of the currents associated with the bay entrance when planning their visit.