Basalt Cliffs on Valentia Island offers a marine dive experience with depths ranging from 13 to 14 metres. The site is characterised by its geological formation, providing a distinct underwater topography. Water temperatures at this location fluctuate between 10C and 16C throughout the year. Species recorded around this area include catsharks, brittle stars, sea stars, crabs, snails, sea squirts, and sea cucumbers. Given the depth and environmental conditions, this site is generally suited for divers with appropriate experience for temperate Atlantic waters. Access to the site is typically via boat, though conditions can vary significantly depending on local weather patterns.

The Perch, also known as Harbour Rock, is a shallow marine dive site located off Valentia Island, Ireland. The site features a depth range of approximately 6 to 7 metres. Given the shallow nature of the topography, it is suitable for divers seeking a relaxed, shallow-water experience. Water temperatures at this location fluctuate throughout the year, ranging from 10C in the winter months to 16C during the peak of summer. Divers should be prepared for variable conditions typical of the Irish coast. Access to the site is generally facilitated by boat, and it is well-suited for those looking for shorter, shallower dives.

Cuas Crom on Valentia Island is a deep-water cove featuring a small pier and slipway for shore access. The site is characterised by steep cliff faces that extend underwater, creating a vertical wall and drop-off topography. Snorkellers can explore this rugged reef structure, which reaches depths starting at 4 metres. Conditions at this location are generally mild, though water temperatures fluctuate between 10C and 16C throughout the year. Due to the nature of the terrain and the depth profile, this site is best suited for intermediate snorkellers.

Knightstown Pier on Valentia Island offers a sheltered environment for snorkellers, with entry easily managed via the slipway or steps. The site is noted for its stone pier structure, which provides crevices that support various marine organisms. Water temperatures at this location range from 10C to 16C throughout the year. While specific sightings at the pier are not confirmed, species recorded around this area include catsharks, compass jellyfish, orange-clubbed nudibranchs, crabs, sea stars, brittle stars, snails, sea squirts, fanworms, and sea cucumbers. The site is suitable for beginners and provides a calm, accessible experience for those exploring the Kerry Coast.

Ballinskelligs Pier serves as the primary entry point for exploring the southern end of Ballinskelligs Bay on Valentia Island. This shore dive features a topography of rocky reefs and dense kelp forests. Divers and snorkellers can navigate depths ranging from 2 to 18 metres. Conditions are variable, with visibility typically between 5 and 10 metres and mild currents. The site is suitable for intermediate divers, while snorkellers will find the area near the castle ruins accessible. Facilities at the site include parking, toilets, showers, a rinse station, and a cafe. Be aware of potential hazards including jellyfish, rip currents, and surf.

Kells Bay Pier offers a sheltered environment for divers and snorkellers along the Kerry Coast. The site features a combination of natural and artificial reef structures, with depths ranging from 4 metres. Access is via a shore entry from the pier or the adjacent beach. Conditions are generally suitable for beginners, though divers should be aware of potential surf and the presence of jellyfish. Water temperatures fluctuate between 10C and 16C throughout the year. The area is protected from most wind directions, providing a relatively calm setting for underwater exploration. Parking is available at the site, and night diving is permitted.

Inishnabro is an exposed Atlantic site off the coast of Ireland, featuring a combination of reef and wall topography. Divers can expect depths ranging from 18 to 30 metres, with an average depth of 24 metres. The site is suited for intermediate divers due to moderate currents that can strengthen quickly; planning for slack water is essential. Visibility typically ranges from 10 to 30 metres. Water temperatures are cold, fluctuating between 10 and 15 degrees Celsius throughout the year. The site is accessible only by boat, and entry is subject to surf conditions. The habitat supports various temperate reef fish and invertebrates.

Minard Castle, located at Kells Bay, is a distinctive storm beach characterised by large rounded boulders and Atlantic waters. The site is situated directly beneath the ruins of a 16th-century castle. Snorkellers can explore the rocky gullies found to the right of the slipway. This shore-entry site is suitable for beginners and offers a snorkel rating of 4 out of 5. Water temperatures at this location vary throughout the year, ranging from 10C in the winter months to 16C during the peak of summer in August and September.