First documented occurrence
San Francisco Bay, California. Collected from docks by the first Rapid Assessment Survey for exotic species, October 3, 1993; sponsored by San Francisco Estuary Institute (SFEI) and suppored by U.S. Fish and Wildlife Service, U.S. Geological Survey, and California Academy of Sciences. Source: A.N. Cohen (SFEI). Identified by G. Lambert (UW).
Additional documented occurrence
Elkhorn Slough (off Monterey Bay) at Moss Landing, California. Collected by Laura Bedinger, April 30, 1998. California Academy of Sciences specimen no. 144184 (Wasson, K., and others, 2001). Originally identified as Didemnum carnulentum, a native species that somewhat resembles D. vexillum Source: G. Lambert.
Web sites with imagery and text
All Taxa Biodiversity Inventory, ATBI Quarterly; D. sp. image, Tomales Bay, CA. (PDF format).
UC Davis, Stachowicz Lab, Jarrett Byrnes' page with D. sp. image.
UC Davis, Stachowicz Lab, Ascidians of the West Coast of North America.
UC Davis, Stachowicz Lab, West Coast Tunicate Settlers and Larvae.
Coastal Science Review, Point Reyes National Seashore, Fall 2003, page 2; (PDF format); D. sp. image from Sausalito, CA, on northern coast of San Francisco Bay.
Web sites with text only
National Park Service, Point Reyes National Seashore, news, July 2, 2003. (PDF format)
Regional Location Map