Prznjak is a reef and cave site located off the coast of Lastovo, Croatia. The topography features a mix of open reef and enclosed cave passages, with depths ranging from 1 to 30 metres and an average depth of 9 metres. Divers experience mild currents and visibility typically between 15 and 30 metres. Access to this site is by boat only, and guided tours are available from operators in Korcula. Due to the cave sections, a dive torch is recommended for navigation. Water temperatures fluctuate between 14 and 20 degrees Celsius, requiring appropriate thermal protection depending on the season.

Zaklopatica Cave is a combined cave and reef system located off Lastovo. The site features depths ranging from 12 to 30 metres, with an average depth of 20 metres. Divers encounter mild currents and visibility between 10 and 30 metres. The cave interior receives ambient light, though conditions vary seasonally with water temperatures between 14 and 20 degrees Celsius. Access is by boat only. Divers should exercise caution near the cave entrance and reef structure, as the rocks and coral are sharp. The site is suitable for intermediate divers and is also available for night diving.

Lukovac, located off the coast of Lastovo, Croatia, offers a varied underwater experience combining a wall, a cave, and drift diving. The site ranges in depth from 9 to 21 metres, with an average depth of 15 metres. Divers should expect moderate currents, which dictate the dive profile and direction. Visibility typically spans 10 to 30 metres. Access is by boat only. Due to the presence of sea urchins in crevices and lionfish in overhangs, divers should exercise caution regarding hand and fin placement. Water temperatures fluctuate between 14C and 21C throughout the year, requiring appropriate thermal protection.

Vertical Limit is a wall and drop-off site located off Lastovo, Croatia. The topography features a vertical wall descending from 28 to 40 metres, with an average depth of 30 metres. The site includes a cave and swim-through sections, creating an overhead environment that requires careful gas management and buoyancy control. Visibility typically ranges from 15 to 30 metres, allowing for clear views of the wall structure. Due to the depth and potential for nitrogen narcosis, this site is suitable only for advanced divers. Water temperatures fluctuate between 14 and 19 degrees Celsius, necessitating appropriate thermal protection. Access is by boat only, and divers should be prepared for mild currents and potential surge.

Vranine is a marine site located in Lastovo, Croatia, featuring a combination of wall and reef topography. The site is situated at depths between 10 and 18 metres, providing a suitable environment for beginner divers. Visibility at the site ranges from 10 to 30 metres, and the area is typically free of currents. Access to the site is by boat only, requiring arrangements with a local dive operator from the nearest town of Korcula. Water temperatures fluctuate between 14 and 21 degrees Celsius throughout the year, necessitating a 5mm or thicker wetsuit during the cooler spring and autumn months.

St Ivan's Bay, located off the coast of Lastovo, offers a reef dive experience suitable for beginners. The site features depths ranging from 18 to 20 metres, with an average depth of 17 metres. Divers can expect visibility between 10 and 30 metres, allowing for clear views of the reef structure. Access to the site is by boat only, and divers should be prepared for moderate currents that can influence conditions. Water temperatures fluctuate between 14 and 21 degrees Celsius throughout the year, necessitating appropriate thermal protection such as a 5mm or 7mm wetsuit depending on the season.

Wreck Graveyard near Lastovo features multiple shipwrecks resting between 18 and 30 metres. This boat-access site offers visibility ranging from 10 to 30 metres, allowing divers to survey the structures before descent. Conditions include a mild current, though the depth requires careful monitoring to avoid nitrogen narcosis. Divers must remain aware of the wreckage structure to mitigate entanglement risks. Given the depth and potential for cooling, intermediate certification is recommended. Water temperatures fluctuate between 14C and 20C throughout the year, so appropriate thermal protection is advised for longer dives. As there are no fixed facilities at this location, confirm boat operator details locally before planning your dive.

Veli Bili Bok is an islet located off Vela Luka on Vis Island, Croatia. The site is characterised by sloping white stone slabs that transition into the sea. Snorkellers can explore depths ranging from 1 to 15 metres, with an average depth of 8 metres. The location is exposed to the open sea, resulting in visibility typically between 15 and 30 metres. Conditions are generally mild, though currents can be present. Access to the water is possible from both the shore and by boat. This site is best suited for intermediate snorkellers due to the open water environment.