Lysekil is a marine dive site in Sweden that requires boat access. The site features a reef structure that provides a navigational environment for divers. Water temperatures are relatively warm, ranging between 25 and 30 degrees Celsius throughout the year. Conditions such as current and visibility are variable, and divers should check local reports before entering the water. As facilities are not confirmed at this location, divers must arrive self-sufficient with all necessary equipment. Divers should be aware of potential hazards including jellyfish and sea urchins, and manage their depth to avoid decompression requirements or nitrogen narcosis.

Släggö is a versatile dive site located at the mouth of a fjord in Lysekil, Sweden. Divers access the water from the shore to explore a varied topography that includes a sloping bottom, a wall, stone piles, and wreck remains. The site offers depths ranging from 1 to 31 metres, with an average depth of 16 metres. Conditions are generally suitable for intermediate divers, featuring mild currents and visibility between 5 and 25 metres. Facilities at the site include parking, toilets, showers, changing rooms, a rinse station, and access to air fills and boat charters. Night diving is also available at this location.

Skar in Gullmarsfjorden offers a combination of reef and wall topography suitable for intermediate divers. The site features depths ranging from 13 to 30 metres, with an average depth of 25 metres. Access is via a shore entry, and divers should be prepared for mild currents and occasional surge. Visibility typically fluctuates between 5 and 10 metres. Water temperatures vary significantly throughout the year, ranging from 4C in February to 16C in August and September. Night diving is possible at this location. Species recorded around this area include wrasses, squat lobsters, king crabs, common lobsters, cuckoo wrasse, lumpfish, and various crab and sea star species.

Berggylteskär is a reef dive site located near Lysekil, Sweden. The site features depths ranging from 9 to 12 metres, with an average depth of 11 metres. Access to the site is by boat, and divers should be prepared for mild currents and potential surge. The site is suitable for beginner divers. While specific observations at this exact location are limited, species recorded around this area include wrasses, squat lobsters, common lobsters, king crabs, rock crabs, lumpfish, gurnard, striped red mullet, pipefish, flatworms, bobtail squid, and giant jellyfish. Water temperatures fluctuate significantly throughout the year, ranging from 4C in February to 17C in August.

Fossen Camping provides shore access to a diverse underwater environment in Gullmarsfjorden, featuring a combination of walls, reefs, and seagrass beds. The site reaches depths between 20 and 35 metres, making it suitable for divers building cold-water experience. Conditions are characterised by mild currents and visibility ranging from 5 to 15 metres. Due to variable visibility, carrying a torch is recommended to inspect the wall features. Water temperatures fluctuate between 4 and 16 degrees Celsius, necessitating appropriate thermal protection. On-site facilities include parking, toilets, showers, a rinse station, and air fills, allowing for convenient day-long diving.

Kåvra is a reef site located in Gullmarsfjorden, Sweden. This shore-entry dive offers a varied topography with depths ranging from the surface down to 30 metres, averaging 18 metres. Conditions at this site are variable, with water temperatures fluctuating between 4C in February and 14C in August and September. Due to the depth profile and environmental conditions, this site is best suited for intermediate divers. As a reef environment, the site provides a typical habitat for regional marine life, though specific species observations are not recorded for this location.

Gäven is a reef site located near Lysekil, Sweden, offering a typical depth range of 9 to 20 metres. Access to this site requires a boat. Divers should be prepared for mild currents and visibility ranging from 5 to 15 metres. Water temperatures fluctuate significantly throughout the year, reaching up to 16C in late summer and dropping to 4C in winter. The site is suitable for intermediate divers. Hazards include cold water, low visibility, and potential surge. Species recorded around this area include wrasses, squat lobsters, common lobsters, king crabs, pipefish, and various jellyfish. Night diving is possible at this location.

Jordfall is located within Gullmarsfjorden, Sweden's only true fjord. The site features a varied topography of reef, wall, and muck environments ranging from 5 to 30 metres in depth, with an average depth of 25 metres. Shore entry is available, and there is no current to manage. Visibility typically ranges between 3 and 10 metres. Water temperatures fluctuate between 4C and 16C, making a drysuit necessary throughout the year. The site is suitable for intermediate divers and supports night diving. Facilities including parking and toilets are provided on-site. Divers must be aware of boat traffic in the fjord and should deploy a surface marker buoy upon ascent.