Pyura spinifera

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

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.

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