Specimen Information

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

Specimen ID252761
GroupTunicates
GenusDidemnum
Speciesvexillum
Common Namea colonial sea squirt
StateWA
CountyPierce
LocalityLongbranch Marina, Filucy Bay [southern end of Puget Sound], in Longbranch.
Mapping AccuracyAccurate
HUC8 NamePuget Sound
HUC8 Number17110019
HUC10 NameSouth Puget Sound
HUC10 Number1711001909
HUC12 NameSouth Puget Sound
HUC12 Number171100190900
Map
Collection Day21
Collection Month5
Collection Year2006
Year AccuracyActual
Potential Pathwayunknown
Statusestablished
Reference 1
Ref. Number:18741
Author:Puget Sound Action Team.
Date:2007
Title:Washington State's Response to an Invasion of Non-native Tunicates.
Publisher:Office of the Govenor, State of Washington.
Pages:29
CommentsA few very small colonies on sabellid worm tubes attached to a suspended crab trap at outer end of marina walkway. About 2 m below surface.
Record TypeLiterature
Earliest Recordlocale
Freshwater/MarineMarine


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Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/21/2026].

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