Karga Island is a boat-access reef located off the coast of Rethymno, Greece. The site features depths ranging from 5 to 12 metres, with an average depth of 5 metres, making it suitable for beginner divers. Visibility is consistent at 30 metres, and currents are generally mild. The site is accessible only by boat, and night diving is available for those interested in exploring the reef after dark. Typical dives last approximately 45 minutes. Water temperatures fluctuate throughout the year, ranging from 16C in February and March to 26C in August and September.

Cement Mixer Wreck, located on the right side of Koutalas Beach in Rethymno, offers a diverse underwater environment for beginners. This shore-entry site features a wreck, a cave, a wall, and a reef, with depths ranging from 3 to 20 metres. Visibility is consistently around 30 metres, providing clear views of the topography. Divers should be aware of sea urchins on rocky surfaces during entry. The cave presents an enclosed overhead environment; stay near the entrance unless specifically trained for cave diving. Currents are variable, so check conditions before entering. Parking is available on-site, and guided tours are offered to help divers navigate the layout.

God's Cave in Rethymno, Greece, is a boat-access cave dive suitable for intermediate divers. The site features an overhead environment at depths between 20 and 30 metres, with visibility ranging from 10 to 30 metres. Inside the cave, a halocline layer creates a shimmering visual distortion, requiring divers to move slowly. As this is an overhead environment, maintaining awareness of the exit route and monitoring air supply is essential. Divers should carry both primary and backup torches, as natural light diminishes rapidly within the cave. The surrounding marine habitat supports various reef fish and invertebrates typical of the region. Currents at this site are generally mild.

Lighthouse Wall in Rethymno, Crete, is a wall and drop-off dive site suitable for beginners. The wall descends from 10 metres to a maximum depth of 35 metres, with shallower sections available for less experienced divers. Access is by boat only. Visibility typically ranges between 10 and 30 metres. Currents at this site are variable, so divers should confirm conditions with their local dive centre before entry. The site supports a variety of Mediterranean reef fish and invertebrates within its wall habitat. Night diving is available, offering a different perspective of the site and its resident marine life.

Elephant Cave in Rethymno is a submerged cavern featuring two distinct domes adorned with stalactites and stalagmites. Divers can observe fossilised elephant remains within the cave structure. The site is reached by boat and is suitable for intermediate divers, with depths ranging from 10 to 16 metres and an average depth of 10 metres. Conditions include mild currents and visibility between 10 and 30 metres. The water temperature fluctuates seasonally from 16C to 26C. Due to the overhead environment and potential for low visibility, this site requires appropriate cave diving experience. The habitat supports a variety of Mediterranean reef fish and invertebrates.

Fokia s cave in Crete is a complex of caverns and ravines formed by the partial collapse of a massive cave during the Santorini Tsunami. The site offers three distinct dive routes through the intact and destroyed sections of the structure. Divers can expect depths ranging from 12 to 21 metres, with an average depth of 18 metres. The environment features a halocline effect where fresh water mixes with salt water. Visibility varies significantly between 13 and 40 metres, and currents are generally mild. Due to the overhead environment and potential for low visibility, this site is suited for intermediate divers. Access is by boat only, with typical dives lasting 40 minutes.

Cathedral Cavern in Crete is a marine cave system featuring stalactites and stalagmites, evidence of its existence above water during Minoan times. The entrance lies at 14 metres, with the site reaching depths between 14 and 21 metres. Divers encounter a halocline effect and temperature fluctuations caused by freshwater pools within the cavern. Light beams penetrate the overhead environment, creating distinct visual effects. Access is by boat, located 500 metres from the shore. Conditions include mild currents and visibility ranging from 13 to 40 metres. Hazards include the overhead environment, low visibility, thermoclines, and the presence of lionfish. Species recorded around this area include Turkish Wrasse, European Parrotfish, and various crustaceans.

Agios Onoufrios in Crete offers a diverse underwater landscape featuring a reef, wall, and cavern system. Divers can expect depths ranging from 12 to 32 metres, with an average depth of 16 metres. Access is via a shore entry, making it suitable for beginners. Conditions are generally stable with mild currents and visibility typically between 20 and 40 metres. The site is also accessible for night diving, with an average dive duration of 46 minutes. Water temperatures fluctuate throughout the year, ranging from 16C in the winter months to 24C in September.