Star ascidian  (Botryllus schlosseri)

Star ascidian growing in rock pool close to shore

© David Chapman / www.nhpa.co.uk

Star ascidian colony exposed at low tide

© Christophe Courteau / naturepl.com

Star ascidian colony

© G. J. Cambridge / www.nhpa.co.uk

Star ascidian colony underwater at high tide

© Christophe Courteau / naturepl.com

Star ascidian colony

© Sue Daly / naturepl.com

Star ascidian colony

© Stephen Foote / www.osfimages.com

Star ascidian colony

© Andrew J. Martinez / SeaPics.com

Star ascidian colony

© Sue Daly / naturepl.com

Star ascidian colony

© Sue Daly / naturepl.com

Star ascidians

© D. W. Greenslade / www.ardea.com

Star ascidian detail

© Christian König / Biosphoto

Star ascidian detail

© Lovell and Libby Langstroth / California Academy of Sciences

Star ascidian close up

© Lovell and Libby Langstroth / California Academy of Sciences

Star ascidian in habitat

© T. C. Middleton / www.osfimages.com