Disney Dreamlight Valley's The Storybook Vale expansion introduces numerous ingredients and materials to the game, with some being easier to find than others. One particular ingredient that could prove troublesome for some players is Mussel, a type of seafood in The Storybook Vale fish collection, which the game describes as a tasty mollusk surprisingly good at filtering water. Like other shellfish in the game, you can only Mussels in specific biomes in The Storybook Vale. However, Mussels can also have tricky spawn locations, so you might struggle with where to find mussels in Disney Dreamlight Valley before you can do anything with them.