Arches is a rocky dive site in the Ionian Islands, Greece, characterised by natural underwater arches. The topography features a multilevel bottom profile ranging from 10 to 40 metres in depth. Access to this site is exclusively by boat. Divers can expect visibility between 20 and 30 metres. Water temperatures fluctuate between 15 and 20 degrees Celsius, reaching up to 23 degrees Celsius during the summer months. The site is suitable for intermediate divers. The habitat supports various Mediterranean reef fish and invertebrates, though specific species sightings are not confirmed. Divers should be aware of sharp coral present at the site.

Blue Caves in the Ionian Islands offers a diverse underwater environment featuring reef, wall, and cave formations. The site reaches depths between 8 and 40 metres, with an average depth of 18 metres. Access is by boat only, located 12.5 kilometres from the shore. Divers and snorkellers encounter variable conditions, including mild currents and visibility ranging from 10 to 40 metres. A thermocline is present, and water temperatures fluctuate between 15C and 20C throughout the year. Due to the overhead environment within the caves, this site is best suited for intermediate divers. Facilities are not guaranteed on-site, so visitors should arrive prepared.

Arcoudaki Beach is a secluded cove located on the northeastern tip of Paxos Island. This site features a combination of reef and cave topography, with depths ranging from 1 to 8 metres and an average depth of 4 metres. Access is via a shore entry from a narrow footpath. The site is suitable for beginners, offering mild currents and visibility typically between 10 and 30 metres. Water temperatures fluctuate throughout the year, ranging from 16C in the winter months to 27C in August. Snorkelers can expect a calm environment in this small cove, which is well-suited for those seeking a relaxed, shallow-water experience.

Komeno Beach Cave is a coastal site located 250 metres from the shore near Paxos Island. This site features an open sea cave and reef topography, suitable for intermediate snorkellers. Access is via the shore, though the cave should only be entered during calm sea conditions due to the overhead environment and potential surf. Water temperatures range from 16C to 27C throughout the year. Species recorded around this area include European Parrotfish, wrasses, Turkish Wrasse, Castagnole, bream, Long-spined Sea Urchin, Wide Eyed Flounder, Needlefish, Mediterranean Cardinalfish, Hermit Crab, Purple Sea Star, Striped Red Mullet, Rabbitfish, and the Fangtooth Moray.

Planoi Beach Arches, located on the northwest tip of Paxos Island near the lighthouse, features rugged rock formations and a series of small arches and swim-throughs. This reef site is accessible from the shore and is suited for intermediate divers due to the presence of strong currents and surf. Depths range from 7 to 30 metres, with an average depth of 18 metres. Visibility varies between 10 and 30 metres, and water temperatures fluctuate from 15C to 21C throughout the year. Typical dives last approximately 45 minutes. The site is also suitable for snorkelling, holding a rating of 4 out of 5.

Lagoon Parga provides a straightforward introduction to reef and cavern diving in the Ionian Islands. Accessible only by boat, the site features depths ranging from 15 to 20 metres, with an average of 18 metres. Divers encounter mild currents and visibility typically between 10 and 30 metres. The site is suitable for beginners and offers the option for night dives, which reveal a different character within the cavern environment. Facilities available on-site include air fills, equipment rental, showers, and toilets. Divers should be aware of the presence of lionfish and the overhead environment within the cavern.

Marmari Beach is a shore-entry reef site located in Turkey, near the town of Marmaris. The site features a rocky topography with a notable shallow underwater arch situated approximately 300 metres from the shore. Depths range from 1 to 10 metres, with an average depth of 5 metres. Conditions are generally mild, with currents described as mild, making this location suitable for beginners. Water temperatures fluctuate throughout the year, ranging from 16C in the cooler months to 26C in August. The site is well-suited for both diving and snorkelling, with a snorkelling rating of 4 out of 5.

HMS Regulus is a technical wreck dive located off Paxos Island in the Ionian Islands, Greece. Resting at depths between 50 and 63 metres, the site is reserved for advanced divers. Access is by boat only, and the site is subject to strong currents that require careful planning around slack tide. Visibility is highly variable, ranging from 3 to 30 metres. Due to the significant depth and potential for entanglement, penetration should only be attempted by those with appropriate technical training and equipment. Divers must manage gas supplies carefully, as temperatures drop to 15 degrees Celsius below 40 metres. Night diving is possible for experienced technical divers.