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Amathia verticillata
Image courtesy of Dan Minchin, Marine Organism Investigations, Ireland.
Amathia verticillata
Taxonomic Group: Bryozoans


Amathia verticillata is an erect, soft-bodied bryozoan, first described from the Mediterranean Sea and now widespread in tropical, subtropical, and warm-temperate waters around the world. We consider it cryptogenic throughout large portions of its global range, but it is a documented invader in California, Hawaii, Australia, New Zealand, South Korea, the Galapagos, the Azores, and Madeira. This bryozoan is found on wood, rock, vegetation (including eelgrass), shells, and man-made structures. Colonies of A. verticillata have had negative impacts by clogging shrimp fishing gear, fouling cultured pearl oysters, and overgrowing and killing eelgrass.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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