Grammeno is a marine site in Greece featuring a combination of rocky reefs, walls, and seagrass meadows. The site is historically significant, as Byzantine sailors carved messages into the rocks here to request safe passage. Underwater, the topography reaches a maximum depth of 12 metres. Conditions are generally mild, with visibility reaching up to 40 metres. Water temperatures fluctuate between 16C and 27C throughout the year. Access to this site is by boat only. Divers should be aware of the presence of lionfish and sharp coral in the area. Showers are available at the site for post-dive use.

Vourlia, located off the Attica coast in Greece, offers a diverse underwater environment featuring reef, wreck, and wall topography. This boat-accessed site reaches depths between 5 and 30 metres, with an average depth of 5 metres. Divers encounter mild currents and visibility ranging from 15 to 30 metres. The site is suitable for intermediate divers comfortable navigating varied terrain, including enclosed cave passages and wreck structures. Due to the presence of boat traffic, divers should remain vigilant. Water temperatures fluctuate between 16C and 23C throughout the year. Always check local conditions with your dive operator before departure, as visibility can be variable.

Katoulia's Canyon is a marine dive site in Greece defined by steep walls and rock formations. The site is named after a historical pirate who reportedly used the canyon to conceal his vessel. Divers can explore depths ranging from 8 to 35 metres, with an average depth of 20 metres. Access is strictly by boat. Conditions include mild currents, though strong currents can occur, and visibility typically spans 15 to 40 metres. Water temperatures fluctuate between 16C and 23C throughout the year. This site is suitable for beginners and experienced divers alike.

The Blue Hole, located on the west side of Proti Island, is a marine dive site featuring a wall, cavern, and reef. Divers access the site by boat, which is required due to its location 2500 metres from the shore. The dive typically lasts 45 minutes, with depths ranging from 7 to 35 metres and an average depth of 18 metres. Visibility varies between 10 and 30 metres. The site includes an overhead environment within the cavern, which features stalactites. Due to the depth and the overhead environment, this site is suitable for intermediate divers. Water temperatures fluctuate between 16C and 23C throughout the year.

Vromoneri Reef is a sheltered bay in Greece that offers a protected environment from strong southerly winds. The site features a shallow sandy bottom that transitions into a large rocky reef as divers move toward the bay exit. With depths ranging from 3 to 12 metres, the site is suitable for beginners and those looking to discover scuba diving. Divers can expect visibility between 15 and 30 metres and mild currents. Shore access is available, supported by facilities including parking, showers, and equipment rental. Hazards at this location include jellyfish, sharp coral, and stonefish. Typical dives last approximately 50 minutes.

Voidokilia is a shore-entry reef site in Greece suitable for beginners. The topography features rocky formations with depths ranging from 3 to 16 metres, averaging 8 metres. Divers and snorkellers can expect visibility between 15 and 30 metres. Conditions are generally mild, though boat traffic is a noted hazard. The site supports a variety of Mediterranean reef fish and invertebrates typical of the region. Water temperatures fluctuate throughout the year, ranging from 16C in winter to 26C in late summer. A typical dive lasts approximately 60 minutes, and parking is available for visitors.