Feather stars (Florometra serratissima) are unusual looking animals that are related to sea stars. The majority of this animal consists of large filter feeding arms that extend outward gleaning small particles of food from the passing current. At the base of the arms is a small body section that contains the mouth. There are also slender legs (cirri) that allow the feather star to grasp onto rockwork, sponges and other surfaces. Feather stars can grow to 10 inches (25 cm) across, with a range from northern Alaska to northern Mexico.