Didemnum vexillum
Didemnum vexillum
(a colonial sea squirt)
Tunicates
Exotic
Collection Info
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Species Profile
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152 results for Didemnum vexillum (a colonial sea squirt)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
272577 AKSitkaPacific Ocean, at Whiting Harbor in Sitka Sound2010 19010212 Baranof Islandestablished
623649 CAAlamedaBallena Bay2005 18050004 San Francisco Bayestablished
623705 CAAlamedaBallena Bay2010 18050004 San Francisco Bayestablished
623665 CAAlamedaBerkeley Marina2005 18050002 San Pablo Bayestablished
623707 CAAlamedaDumbarton Bridge2010 18050004 San Francisco Bayestablished
623674 CAAlamedaPort of Oakland Office2010 18050004 San Francisco Bayestablished
623703 CAContra CostaChevron Pier2010 18050002 San Pablo Bayestablished
623667 CAContra CostaPoint Richmond Piers2005 18050002 San Pablo Bayestablished
623661 CAContra CostaRichmond Marina2005 18050002 San Pablo Bayestablished
623670 CAContra CostaSanta Fe Channel - Front2005 18050002 San Pablo Bayestablished
623646 CAHumboldtAquaculture Floats2006 18010102 Mad-Redwoodestablished
623678 CAHumboldtDilapidated Dock Area2006 18010102 Mad-Redwoodestablished
623680 CAHumboldtEureka Boat Launch2006 18010102 Mad-Redwoodestablished
252803 CAHumboldtHumboldt Bay (near Eureka, CA)2001 18010102 Mad-Redwoodestablished
623679 CAHumboldtHumboldt Chevron Pier2006 18010102 Mad-Redwoodestablished
623692 CAHumboldtParking Lot With Pallets Stacked2006 18010102 Mad-Redwoodestablished
623694 CAHumboldtThe Log Ride2006 18010102 Mad-Redwoodestablished
623697 CAHumboldtWooden Structure Debris2006 18010102 Mad-Redwoodestablished
623696 CAHumboldtWood-loading/Barge Dock2006 18010102 Mad-Redwoodestablished
623677 CAMarinAyala Cove2010 18050002 San Pablo Bayestablished
623653 CAMarinCorinthian Marina2005 18050002 San Pablo Bayestablished
623689 CAMarinCorinthian Marina2010 18050002 San Pablo Bayestablished
623668 CAMarinParadise Cay2005 18050002 San Pablo Bayestablished
623685 CAMarinParadise Cay2010 18050002 San Pablo Bayestablished
623669 CAMarinRichardson Bay2005 18050002 San Pablo Bayestablished
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Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/5/2025].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.