Släggö is a dive site that is very centrally located in Lysekil. The site is easy to find and easy to dive at. The entrance is via a giant step from the jetty, but the ascent is a bit more difficult. The ascent is along the stone pier and from there you almost have to climb to get up, you should judge for yourself what you think of this. The dive takes place along the mountainside of Släggö. The depth is around 30m, and the dive is varied with walls and flat bottom. On the walls you can find a lot of Troll Lobster, especially during night dives. But even the flat bottom areas have a rich diversity of species. The night dives are clearly the best at this site.