Pinnipeds (from Latin pinna, wing or fin, and ped-, foot) or fin-footed mammals are a widely distributed and diverse group of semi-aquatic marine mammals. Seals, sea lions, and walruses are popular pinnipeds in the media. They are often portrayed balancing beach balls on their noses and clapping with their flippers. At least three professional sports teams in the San Francisco, California area have been known as "the Seals".