Specimen Information

Botrylloides violaceus
Botrylloides violaceus
(an orange sheath tunicate)
Tunicates
Exotic

Specimen ID279275
GroupTunicates
GenusBotrylloides
Speciesviolaceus
Common Namean orange sheath tunicate
StateWA
CountyJefferson
LocalityHood Canal, Black Point
Mapping AccuracyAccurate
HUC8 NameHood Canal
HUC8 Number17110018
HUC10 NameHood Canal
HUC10 Number1711001808
HUC12 NameHood Canal
HUC12 Number171100180800
Map
Collection Day23
Collection Month9
Collection Year2011
Year AccuracyActual
Potential Pathwayunknown
Statusestablished
CommentsPendulous masses on rock substrate, most often noted in 4-5 m water and about a meter apart. Also on oyster shell in shallower waters in bay,in what appeared to be an active aquaculture site.
Record TypePersonal communication
Freshwater/MarineMarine
SizePendulous masses, some 25 cm across


Disclaimer:

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].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

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