Disclaimer:

The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

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Common name: an orange sheath tunicate

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

Native Range: Eastern Asia

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

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.

Remarks: Botrylloides violaceus in the northeastern coastal region of North America were previously identified as B. diegensis

Author: Fuller, P.

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.