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| NAS - Nonindigenous Aquatic Species |
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Common Name: an orange sheath tunicate
Taxonomy: available through 
Identification: Colonial. Thin, rubbery crust. Usually orange, but variable. Individuals arranged in twisting rows, more than 1/16" (2mm) long, 1/64" (0.5mm) wide (Meinkoth 1981).
Size: 1/8
Nonindigenous Occurrences: Populations are established in Prince William Sound, Alaska (Ruiz 2000); San Francisco Bay, California (Ruiz 2000); Long Island Sound, Connecticut (Balabam 2001); coastal areas of Maine (Balabam 2001); Long Island Sound, New York (Balabam 2001); Coos Bay, Oregon (Ruiz 2000); Puget Sound, Washington (Cohen 2004).
Ecology: Found on rocks, pilings, floats, and other substrates in bays and harbors; near low-tide line and below (Meinkoth 1981).
Means of Introduction: Shipping.
Status: Established.
Impact of Introduction:
Remarks:
References
Author: Pam Fuller
Revision Date: 4/24/2006 Citation for this information:
Pam Fuller. 2008. Botrylloides violaceus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=2418> Revision Date: 4/24/2006
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