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Conopeum chesapeakensis
Image courtesy of Linda McCann, Smithsonian Environmental Research Center
Conopeum chesapeakensis
Taxonomic Group: Bryozoans


The bryozoan Conopeum chesapeakensis is tan-colored, erect and branching. It was first described in 1995 from the Rhode River in the Chesapeake Bay, Maryland. Introduced populations were found in San Francisco Bay, California covering large areas of the hulls of two obsolete cargo ships from the US Ready Reserve Fleet. These vessels were towed through the Panama Canal 5,000 nautical miles for dismantling in Texas and C. chesapeakensis survived the journey, remaining alive and abundant. It is known from seagrass beds, oyster beds, pilings, and ships' hulls and appears to be most abundant in brackish waters.

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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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