Invasion

Invasion Description

None

Geographic Extent

whole coastline/British Isles/Atlantic Ocean, North & Irish Seas (MarLin 2008); Robinh's Hood Bay/North Sea (Willows 1987); France/English Channel; Huisduinen, Sea Dike, N Sea Shore, Near Den Helder/Netherlands/North Sea (USNM 106959, US National Museum of Natural History 2008); Helgoland/Germany/North Sea (USNM 19911, US National Museum of Natural History 2008); widespread on the Dutch coast/Netherlands/North Sea (Holthuis 1949); Netherlands/Zuiderzee (persisted for 4 years after closure, disappeared during conversion to freshwater, Holthuis 1949); Spiekeroog/Germany/North-Wadden Seas (Raupach et al. 2014); Battenoord/Netherlands/Rhine Delta (Raupach et al. 2014) Wilhelmshaven/Germany/North-Wadden Seas (Raupach et al. 2014)