Medvidina Špilja is a sea cave located near Komiža on Vis Island, Croatia. Recognised as the longest sea cave in the Adriatic, it extends 160 metres into the coastline. The site is an overhead environment that requires boat access and is suitable for intermediate snorkellers. Depths start at 2 metres, with visibility ranging from 5 to 40 metres depending on conditions. The cave is dark and atmospheric, and visitors are advised to carry a torch to explore the inner chambers effectively. Due to the nature of the site, be aware of boat traffic in the vicinity. Water temperatures fluctuate between 14C and 26C throughout the year.

Modra Špilja, located on Biševo Island near Komiža, is a marine cave known for its iridescent blue glow produced by sunlight reflecting off the white sandy floor. The site reaches depths of 10 to 40 metres, with an average depth of 12 metres. Access is strictly by boat, as the site is 5000 metres from the shore. Visibility ranges from 15 to 30 metres. Conditions include mild currents, though divers and snorkellers should be aware of potential hazards including boat traffic, overhead environments, strong currents, and surf. Guided tours are available for this site, which is suitable for beginners.

Bisevo Wall near Komiza is a deep-water site featuring a combination of wall, reef, and cave topography. The wall begins at 19 metres and descends to 60 metres, with an average depth of 25 metres. Divers should expect moderate currents and surges, requiring careful buoyancy control to avoid sharp coral and rock formations on the wall face. Visibility ranges from 10 to 30 metres. Access is by boat only, as the shore break and surf make entry from land hazardous. Due to the depth and conditions, this site is suitable for advanced divers. Water temperatures remain cool, ranging between 14 and 18 degrees Celsius throughout the year.

The Vassilios T is a 105-metre shipwreck resting on a sandy seabed near Komiža. Sunk in 1939 while carrying coal, the vessel lies on its port side with depths ranging from 22 to 55 metres, averaging 40 metres. This advanced dive requires boat access and involves navigating an overhead environment. Divers should be prepared for mild currents and visibility between 15 and 30 metres. Water temperatures fluctuate between 14C and 18C, with cold upwellings at depth often making a drysuit advisable. Due to the significant depth and wreck structure, divers must manage decompression requirements and potential entanglement hazards carefully.

Velika Špilja is a cave and cavern system located near Komiža, Croatia, featuring a wall that descends to 35 metres. This site offers a varied profile suitable for intermediate divers, with mild currents and visibility ranging from 10 to 25 metres. The cavern interiors are generally well-lit, allowing for navigation along the walls. Divers should exercise caution when moving through the cavern to avoid contact with the rock and coral surfaces, which are sharp. Protective gear is recommended to prevent injury from these edges. Access to this site is by boat only, and divers should confirm schedules with local operators before planning their visit.

Sika is a multi-terrain site off Komiža, Croatia, featuring a reef, a pinnacle, and a wall that drops beyond 60 metres. Divers typically explore the site at an average depth of 19 metres. The topography includes a wall where gorgonians and large sponges are found, while the reef structure provides habitat for scorpionfish, snowflake moray eels, conger eels, and nudibranchs. Anthias inhabit the shallower pinnacle sections, and dentex are observed in the open water. Conditions include moderate currents and visibility ranging from 10 to 30 metres. Divers should be prepared for thermoclines and boat traffic. This site is suitable for intermediate divers and requires boat access.

Stupiste, located off Vis Island, features a combined reef and wall structure that descends from 19 to 35 metres. The site is characterised by its lack of current, allowing for a relaxed, exploratory dive along the wall profile. Visibility at the site ranges from 10 to 30 metres. Water temperatures fluctuate between 14 and 19 degrees Celsius, necessitating appropriate thermal protection. Access to this site is exclusively by boat, and divers should coordinate entry and exit procedures with their skipper. Given the depth range, this site is suited to intermediate divers who should monitor their bottom time and depth profile carefully throughout the dive.

Marinero is a technical wreck dive located off the coast of Komiža, Croatia. Resting at a depth of 80 to 82 metres, this site is strictly for advanced divers capable of managing significant decompression requirements and nitrogen narcosis. Access is exclusively by boat, with the wreck situated over 10 kilometres from the shore. Visibility typically ranges from 5 to 10 metres, and water temperatures remain between 14C and 17C throughout the year, necessitating the use of a drysuit. Divers should expect mild currents and must arrive fully self-sufficient with a robust ascent plan and appropriate gas redundancy for the 15-minute average bottom time.