Specimen Information

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

Specimen ID160966
GroupTunicates
GenusDidemnum
Speciesvexillum
Common Namea colonial sea squirt
StateCA
CountyMonterey
LocalityElkhorn Slough [at Moss Landing, CA]
Mapping AccuracyAccurate
HUC8 NameMonterey Bay
HUC8 Number18060015
HUC10 NameMonterey Bay
HUC10 Number1806001503
HUC12 NameElkhorn Slough
HUC12 Number180600150301
Map
Collection Day30
Collection Month4
Collection Year1998
Year AccuracyActual
Potential Pathwayshipping
Statusestablished
CommentsFirst documented occurrence in California.
Record TypeSpecimen
Earliest Recordstate
Disposalmuseum (CA Academy of Sciences)
Museum Cat Number144184
Freshwater/MarineMarine


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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/9/2025].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.