Ascidia callosa
Kingdom: Animalia
Phylum: Chordata
Class: Ascidiacea
Order: Enterogona
Family: Ascidiidae
Genus: Ascidia
Reference
http://www.marinespecies.org/aphia.php?p=taxdetails&id=103407
http://species-identification.org/species.php?species_group=zmns&id=569