Specimen Information

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

Specimen ID252582
GroupTunicates
GenusDidemnum
Speciesvexillum
Common Namea colonial sea squirt
StateME
CountyLincoln
LocalityFort Island Narrows [Damariscotta River just E of Boothbay]
Mapping AccuracyAccurate
HUC8 NameSt. George-Sheepscot
HUC8 Number01050003
HUC10 NameJohns Bay-Boothbay Harbor
HUC10 Number0105000303
HUC12 NameDamariscotta River
HUC12 Number010500030304
Map
Collection Month1
Collection Year2004
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.
Comments12 ft depth; on shell hash and gravel
Record TypeLiterature
Freshwater/MarineMarine


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Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [11/15/2025].

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