Pyura spinifera

Pyura spinifera, commonly called the sea tulip, is a species of sessile ascidian that lives in coastal waters at depths of up to 80 m (260 feet). As with almost all other ascidians, sea tulips are filter feeders. The common name comes from the organism's appearance - that of a knobbly 'bulb' or flower attached to a long stalk. Sea tulips come in a variety of colours, including white, pink, yellow, orange, and purple. The coloration of sea tulips depends upon their association with a symbiotic sponge that covers their surface.

Pyura spinifera
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Tunicata
Class:	Ascidiacea
Order:	Stolidobranchia
Family:	Pyuridae
Genus:	Pyura
Species:	P. spinifera
Binomial name
Pyura spinifera (Quoy & Gaimard, 1834)