Uddevalla is a town and the seat of Uddevalla Municipality in Västra Götaland County, Sweden. In 2010, it had a population of 31,212. It is located at a bay of the south-eastern part of Skagerrak. The beaches of Uddevalla are filled with seashells and Uddevalla has one of the largest shell-banks in the world. Uddevalla has a port and it once had a large shipyard, the Uddevallavarvet ("Uddevalla wharf"), which was the largest employer in Bohuslän during the 1960s. The 1970s recession, that affected the Swedish shipyard industry severely, led to the closing of the wharf in 1985.