Invasion

Invasion Description

None

Geographic Extent

Birkenfels shipwreck, 30 miles off Zeebrugge/Belgium/North Sea (2005, Zintsen et al. 2008, 51 38, 2 32); "Southern coasts"/England/English Channel (Lincoln 1979); Helgoland/Germany/North Sea (1998, on floating seaweed, Franke and Gutow 2003)