Skomer has a large population of breeding seabirds that include Manx Shearwaters, Razorbills, Great Cormorants, Black-legged Kittiwakes, Atlantic Puffins, European Storm Petrels, Common Shags, Eurasian Oystercatchers and gulls, as well as birds of prey including Short-eared Owls, Common Kestrels and Peregrine Falcons. The island’s slopes are covered with bluebells and a variety of wildflowers. Grey seals and harbour porpoises can sometimes be seen in the surrounding waters.