Polycarpa aurata, also known as the ox heart ascidian, the gold-mouth sea squirt or the ink-spot sea squirt, is a species of tunicate in the familyStyelidae.
Description
Polycarpa aurata grows to a height of 5 to 15 cm (2 to 6 in). It has an urn-shaped, hollow body with two siphons, one at the top and the other on the side. The body colour of this tunicate is white with purple and orange patches and purple lines. The inside is yellow or orange and this is visible around the rim of the siphons.[2][3]
Tunicates feed by drawing water in through the branchial siphon at the top, filtering out phytoplankton, bacteria and other food particles, before expelling the water through the atrial siphon at the side. hydroids and algae may grow on the outside of the tunicate[2] and nudibranchs such as Nembrotha lineolata sometimes feed on them.[4]
References
^ abKaren Sanamyan (2012). Shenkar N, Gittenberger A, Lambert G, Rius M, Moreira Da Rocha R, Swalla BJ, Turon X (eds.). "Polycarpa aurata". Ascidiacea World Database. World Register of Marine Species. Retrieved May 24, 2012.