Invasion
Invasion Description
None
Geographic Extent
Cape Ann, Gloucester/MA/Annisquam River (Pettibone 1963); Revere/MA/Massachusetts Bay (2/1968, USNM 58133, U.S. National Museum of Natural History 2014); World's End, Hingham/MA/Massachusetts Bay (2001, MCZ IZ 37251); Third Cliff, Scituate/Massachusetts Bay (10/1965, USNM 58131, U.S. National Museum of Natural History 2014)
Vectors
| Level | Vector |
|---|---|
| Alternate | Dry Ballast |
| Alternate | Ballast Water |