Lough Hyne is a saltwater lake connected to the sea by a narrow tidal channel, designated as a marine nature reserve. The site features diverse topography including reefs, kelp forests, seagrass beds, and drop-offs. Depths range from 5 to 52 metres, with an average of 15 metres. Entry is via Barloge Pier. Visibility reaches up to 20 metres, though conditions vary. A seasonal thermocline typically develops at 25 metres during summer. The site is suitable for beginners and supports both diving and snorkelling. Species recorded around this area include catsharks, sea stars, crabs, sea squirts, snails, dead man's fingers, rockpool prawns, and mauve stingers.

The Kowloon Bridge wreck is a significant artificial reef located off the coast of Ireland near Cork. This advanced dive site features the remains of a large vessel resting at depths ranging from 6 to 36 metres, with an average depth of 20 metres. Access is strictly by boat. Divers should be prepared for challenging conditions, including strong currents, surge, and potential entanglement hazards within the overhead environment of the wreck. Due to the depth and technical nature of the site, it is suitable only for experienced divers. Visibility typically ranges between 5 and 10 metres, and water temperatures fluctuate between 10C and 14C throughout the year.

The SS Malmanger is a deep wreck located off the Kerry Coast, resting on the seabed at depths between 58 and 65 metres. This site is strictly for advanced divers, as it involves decompression diving and presents a complex overhead environment with significant entanglement hazards. Visibility typically ranges from 10 to 15 metres, though Atlantic swells and surge can impact conditions. Water temperatures remain between 10 and 12 degrees Celsius, necessitating the use of a drysuit. Divers must be prepared for nitrogen narcosis and should carry redundant cutting tools and a surface marker buoy. Boat access is required, and surface conditions should be confirmed locally before departure.

Silver Strand on Sherkin Island offers a sheltered shore entry point for snorkellers exploring rocky outcrops and kelp forests. The site is suitable for beginners, though conditions vary with moderate currents and potential rip currents. Water temperatures range from 10C to 16C, necessitating a wetsuit for comfort. The topography features rocky formations at either end of the beach, which support a variety of temperate marine life typical of the region, including various reef fish and invertebrates. Parking is available near the site, which is reached via a short ferry from Baltimore.

The U-260 is a German submarine wreck lying at depths between 38 and 45 metres, with an average depth of 40 metres. Located 7 kilometres from the shore near Cork, this site requires boat access and is suitable only for advanced divers due to the significant depth and strong currents. Divers should be prepared for potential hazards including decompression requirements, nitrogen narcosis, and entanglement risks. Visibility typically ranges from 5 to 15 metres, and water temperatures remain cool throughout the year, fluctuating between 10 and 13 degrees Celsius. The site supports a variety of temperate marine life and invertebrates typical of the region.

78' Rock is a marine dive site in Ireland featuring a consistent depth of 15 metres. The site offers a temperate underwater environment with water temperatures ranging from 10C in winter to 16C during the late summer months. As a rocky habitat, the area supports a variety of temperate marine life, including various reef fish, crustaceans, and cephalopods typical of the region. Due to the specific depth and environmental conditions, this site is suited for divers comfortable with temperate water diving. Conditions at the site can vary, and divers should plan their excursions according to local maritime forecasts.

The Mystique is a wreck located off the Kerry Coast, Ireland, resting at depths between 18 and 22 metres. This site is accessible exclusively by boat, situated 6000 metres from the shore. Divers can expect visibility ranging from 10 to 15 metres. Water temperatures fluctuate between 10 and 16 degrees Celsius throughout the year, making a drysuit or a thick wetsuit advisable for comfort. Due to the presence of strong currents, it is essential to confirm current conditions with the boat captain prior to entry. The site is suitable for beginner divers, though local briefings are recommended before heading out.

The S.S. Illyrian is a shipwreck located 1000 metres off the Kerry Coast in Ireland. Resting at depths between 8 and 22 metres, the site offers a varied profile suitable for advanced divers. Access is strictly by boat, and divers must coordinate with a local charter operator to time the dive with slack water, as strong currents are common. Visibility typically ranges from 5 to 15 metres. Water temperatures fluctuate between 10 and 16 degrees Celsius, making a drysuit recommended for year-round comfort. Divers should remain alert for boat traffic and be prepared for potentially challenging surf at the entry point.