Summary

The yellow sea squirt (Phallusia julinea) is a large solitary ascidian, bright yellow in colour, found in the Indo-West Pacific as well as East of Africa and West of India. It can be found in different areas on the reef crest ofHeron Island. This webpage will detail different aspects of this ascidian, such as its distribution, morphology, anatomy, taxonomy and behaviour. Its life cycle has been much more thoroughly described following an experiment started at the Heron Island Research Station.