Belmullet Tidal Pool is a 20-metre man-made structure in Ireland that fills with Atlantic water at high tide. This site provides a controlled environment for beginners to explore, offering a depth of 1 to 2 metres. The pool features wall topography and acts as an artificial reef, supporting a variety of temperate marine life and invertebrates typical of the region. Divers and snorkellers should be prepared for cold water, which ranges from 9C to 16C throughout the year. Entry is via the shore, and while the pool offers protection from open-sea currents, users should remain aware of potential surge and surf conditions.

Elly Bay is a sheltered site on the Mullet Peninsula in Ireland, offering a mix of reef, seagrass, and artificial reef habitats. This shore-entry location is suitable for beginners, with depths ranging from 1 to 5 metres and an average depth of 3 metres. The eastern side of the bay is particularly calm, providing mild current conditions for both divers and snorkellers. Water temperatures fluctuate between 9C and 16C throughout the year. The site features sandy bottoms and seagrass patches, which support a variety of temperate marine life and invertebrates typical of the region. Facilities at the site include parking, toilets, showers, and first aid.

Inishkea South is a remote island site located 3000 metres from the shore in Ireland. The topography features white sands and a bay near an abandoned village, which serves as a sanctuary for a seal colony. Divers and snorkellers can expect depths starting from 3 metres, with visibility ranging between 5 and 15 metres. Conditions are variable, with moderate currents and potential surf hazards. The site is suitable for intermediate divers and offers excellent snorkelling opportunities. Marine life in this habitat includes various temperate reef fish and invertebrates. Guided tours are available for those visiting this exposed coastal location.

Lacken Pier in Sligo offers a rugged coastal environment featuring a series of underwater gullies and caves. This site is suitable for intermediate divers and snorkelers, with depths ranging from 1 to 9 metres. Entry is via the shore, though conditions can vary significantly, with visibility ranging from 5 to 25 metres. Divers should be aware of potential hazards including surf, surge, rip currents, and strong currents, as well as local boat traffic. Water temperatures fluctuate between 9C and 16C throughout the year. On-site facilities include parking, toilets, showers, changing rooms, and a cafe.

Kilcummin Pier in Sligo, Ireland, features a combination of artificial and natural reef structures. This site is suited for advanced divers and snorkelers, offering depths ranging from 10 to 30 metres. Access is via a shore entry, though conditions can be challenging due to the presence of surf, surge, and moderate currents. The underwater topography is rugged, reflecting the exposed nature of the coastline. Facilities available at the location include parking, air fills, and access to boat charters or guided tours. Water temperatures fluctuate between 9C and 15C throughout the year, requiring appropriate thermal protection for all in-water activities.

Silver Strand at Dugort is a reef site located on the north side of Achill Island, facing Blacksod Bay. This shore-entry location is suitable for beginners, though the water is cool, ranging from 9C to 16C throughout the year. Snorkellers should exercise caution due to potential rip currents, strong currents, and surf conditions. The site is part of a coastal trail that extends toward Golden Strand, passing near seal caves and bird colonies. Typical sessions last around 60 minutes. Due to the cool water temperatures, appropriate thermal protection is necessary to prevent heat loss during extended exposure.