Specimen Information

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

Specimen ID252592
GroupTunicates
GenusDidemnum
Speciesvexillum
Common Namea colonial sea squirt
StateME
CountyLincoln
LocalityAtlantic Ocean, Gulf of Maine, off the Damariscotta River at Thrumcap Island
Mapping AccuracyAccurate
HUC8 NameSt. George-Sheepscot
HUC8 Number01050003
HUC10 NameJohns Bay-Boothbay Harbor
HUC10 Number0105000303
HUC12 NameIslands of Johns Bay-Islands of Boothbay Harbor
HUC12 Number010500030306
Map
Collection Day22
Collection Month8
Collection Year2003
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.
Comments10-15 ft depth; on rocks
Record TypeLiterature
Freshwater/MarineMarine


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Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [11/17/2025].

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