Vannholmen, Tjörn

Vannholmen on the island of Tjörn is an advanced dive site on Sweden's west coast, where the rocky coastline of this Bohuslän island provides challenging diving for experienced cold-water enthusiasts. The site's advanced classification reflects the conditions that require solid skills while delivering the enhanced marine life that more demanding sites typically offer. The underwater landscape at Vannholmen features the granite topography and kelp forests characteristic of Tjörn's coastline, with the specific conditions at this location creating diving that demands more from the diver than the island's gentler sites. The rocky terrain provides the substrate for dense biological growth, with the marine communities reflecting the productive conditions. The rock surfaces support impressive communities of sessile organisms. Soft corals, anemones, and sponges create the colorful biological coverage that makes Bohuslän's best sites visually stunning. The conditions that create the site's advanced classification also drive the nutrient availability that supports this dense marine growth. Fish and crustacean populations reflect the healthy marine environment, with cod, wrasse, lobsters, and crabs commonly encountered. The advanced diving conditions often mean larger specimens and more diverse encounters than sheltered beginner sites provide. Vannholmen delivers the quality advanced cold-water diving that Tjörn's exposed coastline is known for, rewarding experienced divers with the rich marine biology that productive Nordic waters support.