Ascidians

An area dominated by ascidians (also known as seasquirts or tunicates; Class Ascidiacea), a diverse group of solitary or colonial animals, the adults of which are sessile. Ascidians are bag-like filter feeders, drawing water in and out through separate inhalant and exhalent siphons. They occur from intertidal to deep ( > 2000 m) subtidal waters, and can reach high abundances.