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Botryllus planus
Image courtesy of Rosana Rocha, Universidade Federal do Paraná (UFPR), Brazil
Botryllus planus
Taxonomic Group: Tunicates


Botryllus planus is a colonial tunicate which can vary in color, ranging from being completely orange (as seen in the picture) to having zooids that are dark purple, purplish brown or black, with a white, pale green or golden yellow area surrounding the branchial opening of each zooid. It is native to the warm waters of the western Atlantic, from North Carolina, Bermuda, Panama, Curaçao, Colombia, Venezuela and Brazil. In North America, there is one record of this species from Chincoteague, Virginia, in 1994, but information on its establishment here is unknown, suggesting that it was a failed invasion. Throughout its range, B. planus can be found on both man-made and natural substrates, including floating docks, pilings, mangroves and rocky reefs. No impacts have been reported from introduced populations.

*Outside of its native range, this species is not currently established in North American waters.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
Access Date:

Marine Invasions Lab
Smithsonian Environmental Research Center

P.O. Box 28
647 Contees Wharf Road
Edgewater, MD 21037-0028 Tel: 443 482 2200
Fax: 443 482 2380

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