Star ascidian
Kingdom: Animalia Phylum: Chordata Class: Ascidiacea Order: Pleurogona Family: Styelidae Genus: Botryllus Species: B. schlosseri Description These colonial sea squirts form 2-4 mm thick sheets. The zooids (animals) are positioned in star shaped formations. In the center of each star there is a common cloak siphon (opening). Each formation...