Invasion

Invasion Description

None

Geographic Extent

Orkney Island/Scotland/North Sea (2012-2017, Kakonnen et al. 2018); Carrickfergus marina, Belfast/Northern Ireland/Belfast Lough (2006, Minchin 2007, 54º42.65' 05º48.80', 1st record in Northern Ireland); Culleroats/England/North Sea (Sheader 1978, 55 02 N, 1 26 W); England/Thames estuary (Lincoln Wimereux/France/Strait Of Dover, Pas De Calais (1967, USNM 138912, U.S. National Museum of Natural History 2013); Schouwen Island, Zeeland/Netherlands/English Channel ( 1969, USNM 138913 , U.S. National Museum of Natural History 2013); Aamolle/Denmark/Limfjord (1922, Crawford 1937)