Specimen Information

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

Specimen ID160957
GroupTunicates
GenusDidemnum
Speciesvexillum
Common Namea colonial sea squirt
StateMA
LocalityAtlantic Ocean on the northern edge of George's Bank (about 160 miles off outer Cape Cod, MA)
Mapping AccuracyAccurate
HUC8 NameGulf of Maine/Bay of Fundy
HUC8 Number32504000
Map
Collection Day1
Collection Month11
Collection Year2003
Year AccuracyActual
Potential Pathwayshipping
Statusestablished
Reference 1
Ref. Number:24153
Author:USGS - Woods Hole Science Center.
Date:2004
Title:Marine Invasive Species, Didemnum lahillei, a colonial tunicate; ascidian; sea squirt, New England Offshore Occurrences and Images.
CommentsWater depth = 47m. Substrate, pebble gravel.
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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