Chapel Bay, located on the largest of the Copeland Islands in Strangford Lough, is a secluded site accessible exclusively by boat. The area features extensive kelp forests that provide a habitat for various marine life. Species recorded around this area include harbour and grey seals, catsharks, sea slugs, wrasses, giant jellyfish, orange-clubbed nudibranchs, skates, common and squat lobsters, as well as various sea stars and sea hares. Water temperatures at this site vary between 8C and 15C throughout the year. Due to the nature of the location and the boat-based entry, this site is suited for advanced snorkellers.

Ballymaccormick Point is a rocky outcrop situated between Bangor and Groomsport. This shore-entry site features shallow rocky reefs and kelp forests that are best accessed at high tide. The location is suitable for beginners, though water temperatures remain cool, ranging from 8C to 15C throughout the year. Thermal protection is recommended for those planning prolonged immersion. Facilities available near the site include a cafe, toilets, and showers. Snorkellers should be aware of potential hazards including sea urchins and sharp coral present in the rocky environment.

Groomsport Beach West is a shore-entry reef site located near Groomsport Harbour in Strangford Lough. The topography consists of a sandy seabed interspersed with rocky patches, reaching depths of 1 to 5 metres with an average of 3 metres. Snorkellers may encounter catsharks, common sea stars, and snails, which are frequently recorded here. Other species observed include European green crabs, shannies, sea squirts, and various sea slugs. Conditions are subject to moderate currents, and users should be aware of potential hazards including entanglement and sharp structures. Facilities at the site include parking, toilets, showers, changing rooms, a cafe, and a dive shop.

Kelly's Steps in Strangford Lough is an artificial reef site situated within a designated recreational harbour area. The site features stone steps and pier walls constructed of limestone, which provide a substrate for marine growth. Divers and snorkellers typically explore the area around these structures at depths ranging from 1 to 4 metres, with an average depth of 2 metres. Conditions include moderate currents and visibility between 2 and 5 metres. Due to cold water temperatures between 8 and 15C, dry suits or 8mm semi-dry suits are recommended. Hazards include boat traffic, entanglement risks, surge, and strong currents. Facilities available nearby include parking, toilets, showers, and a cafe.

Robbie's Point is a rocky reef located at the southern end of the coastal park in Donaghadee, Strangford Lough. This shore-entry site features a series of gullies and rock pools suitable for shallow-water exploration. Divers and snorkellers can expect depths ranging from 1 to 10 metres, with an average depth of 5 metres. Conditions at this site are variable, with visibility typically between 3 and 10 metres and moderate currents. Due to the presence of surf and currents, this site is best suited for intermediate-level divers. A typical dive duration is approximately 30 minutes. Water temperatures fluctuate throughout the year, ranging from 8C in March to 15C in August and September.

Luke's Point is a shore-entry reef site located in Strangford Lough, situated just east of the waste water pumping station. The topography consists of bedrock and coarse sand, offering a varied substrate for exploration. Divers and snorkellers should note that depths are shallow, ranging between 2 and 7 metres. Due to the nature of the location, intermediate skill levels are recommended. Visitors should remain vigilant regarding boat traffic and potential surf conditions. Facilities available at the site include parking and toilets. The site is well-suited for snorkelling, holding a rating of 4 out of 5.

Ballyvester Beach in Strangford Lough offers a shore-accessible snorkeling experience suitable for beginners. The site features a sandy bay that transitions into rocky, kelp-covered reefs. Water temperatures at this location range from 8C to 15C throughout the year. Divers and snorkellers should be aware of potential surf and sharp coral in the area. Mild currents are typically present. Facilities at the site include a car park and showers for visitor use.

Skippingstone Beach in Strangford Lough is a sheltered cove featuring a Victorian-era bathing pool area. Accessible via a modern ramp, this shore-entry site is suitable for beginners looking for a quick snorkel. The site reaches depths of 1 to 10 metres, with an average depth of 5 metres. Conditions include mild currents and visibility ranging from 3 to 10 metres. Water temperatures are cold, fluctuating between 8C and 15C throughout the year, presenting a risk of hypothermia. Divers and snorkellers should be aware of potential hazards including boat traffic, entanglement, and rip currents. Facilities available at the site include parking, toilets, showers, changing rooms, and a rinse station.