Magnificent Biscuit Seastar (Echinoderm) Found On A Rock Covered Totally In Baby Mussels. Starfish On The Shoreline. Location: Susan's Bay, Tasmania, Australia. ((Species: Tosia Magnifica, Family: Goniasteridae, Class: Asteroidea, Phylum: Echinodermata, Superphylum: Deuterostomia, Subkingdom: Metazoa, Kingdom: Animalia)) Photo