This project is complete and the website is archived and no longer updated.
This archived website assembles and communicates information on the distribution, ecology, and marine habitat impacts of the invasive colonial ascidian invader Didemnum vexillum
Colonies of Didemnum vexillum exhibit a wide variety of morphological variants. Where current velocity is low, they form long, ropey or beard-like colonies that commonly hang from hard substrates such as docks, lines, and ship hulls. Where current velocity is high, they form low, undulating mats with short surficial appendages that encrust and drape rocky seabeds (pebbles, cobbles, boulders, and rock outcrops).