Invasion

Invasion Description

1st Record: Hawthorne Cove Marina, Salem/MA/Salem Harbor (Massachusetts Bay) (2000, MIT Sea Grant 2003, persisting to at least 2010, MIT Sea Grant 2012)

Geographic Extent

Hawthorne Cove Marina, Salem/MA/Salem Harbor (Massachusetts Bay) (2000, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013)