Taxonomy Search:

Ascidia sydneiensis
Image courtesy of Rosana M. Rocha, Universidade Federal do Paraná (UFPR), Brazil
Ascidia sydneiensis
Taxonomic Group: Tunicates


Ascidia sydneiensis is a large solitary tunicate which can vary in color, and may be white, cream, yellow, orange, red, or burgundy. The tunic itself is translucent and the color is caused by pigmentation on the body wall. It was first described from Sydney, Australia, in 1855 and is widely distributed in the Indo-Pacific where it is believed to be native. It has been introduced to the Caribbean, Southwestern Atlantic and Southeast Pacific. In the US, it has been introduced to several locations by shipping including Hawaii, southeastern Florida and the Virgin Islands. It is commonly found on mangrove roots and as fouling on docks, ship hulls, and other man-made structures in tropical waters, but no specific impacts have been reported.

This is some default tab content, embedded directly inside this space and not via Ajax. It can be shown when no tabs are automatically selected, or associated with a certain tab, in this case, the first tab.


Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
Access Date:

Marine Invasions Lab
Smithsonian Environmental Research Center

P.O. Box 28
647 Contees Wharf Road
Edgewater, MD 21037-0028 Tel: 443 482 2200
Fax: 443 482 2380

Databases Overview| National | Chesapeake Bay | California | Japanese Tsunami Marine Debris | Panama |