Awesome Ascidians

An interactive guide to the sea squirts (ascidians) of New Zealand's coastal waters. 

Sea squirts are amongst the more common and colourful marine invertebrates that inhabit our coasts, harbours, and ocean depths. Now you can identify them with Awesome Ascidians, a fully illustrated interactive pdf with high-quality images of the animals in life. Just click on an image in the colour index and you will be taken to a page of distinguishing characters, images and icons to simplify identification. New species pages are added as they are available, so divers, send us your images to be considered for up and coming versions!

Version 2.0 (November 2016) is now available for download.

Awesome Ascidians identification guide (PDF 10.2 MB)

Awesome Ascidians - an interactive guide to NZ sea squirts


Hypsistozoa fasmeriana (Michaelsen, 1924). [Sea squirt ID guide]
Synoicum stewartense (Michaelsen, 1924). [NIWA]
Research subject: Marine Flora