Specimen Information

Didemnum vexillum
Didemnum vexillum
(a colonial sea squirt)
Tunicates
Exotic

Specimen ID252581
GroupTunicates
GenusDidemnum
Speciesvexillum
Common Namea colonial sea squirt
StateRI
CountyWashington
LocalityNarragansett Bay on dock at the U of RI Graduate School of Oceanography
Mapping AccuracyAccurate
HUC8 NameNarragansett
HUC8 Number01090004
HUC10 NameNarragansett Bay
HUC10 Number0109000409
HUC12 NameLower West Passage
HUC12 Number010900040908
Map
Collection Day1
Collection Month12
Collection Year2002
Year AccuracyActual
Potential Pathwayunknown
Statusestablished
Reference 1
Ref. Number:24162
Author:USGS - Woods Hole Science Center.
Date:2008
Title:Marine Nuisance Species, Didemnum, a colonial tunicate; ascidian; sea squirt - New England Coast Location Table.
CommentsIntertidal; on wood pilings, mussels, and rocks
Record TypeLiterature
Freshwater/MarineMarine


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Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/2/2026].

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