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Ascidia sp. A
Image courtesy of Nadia Bonnet, Universidade Federal do Paraná, Brazil. Image is of a general Ascidiidae species and is adapted from Kott (1985).
Ascidia sp. A
Taxonomic Group: Tunicates


Ascidia sp. A does not match any previously described species. It is long and flat with a thin and translucent tunic; the oral siphon is long and the atrial siphon is shorter and emerges from the posterior half of body. It was first discovered in 1983 in San Diego and San Francisco Bays in California and subsequently became common in fouling communities along the California coast from San Diego to San Francisco Bay. However, in 2011, this species was absent from a number of locations sampled throughout California. Its establishment and impacts are unknown on the West Coast.

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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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