Havets Hus is a salt water aquarium where you can see around 100 different species from the Gullmar Fjord and the sea outside Lysekil. The aquarium offers lots of exciting experiences, Havets Hus has a total of 40 tanks. From the biggest tunnel aquarium, which contains 140,000 litres of salt water, to the smallest 70-litre tanks. You can walk through the tunnel aquarium without getting your feet wet, surrounded by water, among piked dogfish, cod and congers.