Invasion

Invasion Description

1st record: Le Havre/France/English Channel (1999, Breton et al. 2004). Abundance has increased throughout the coastline (Gothland et al. 2013).

Geographic Extent

Hampton Jetty, Kent/England/Herne Bay (4/3/15, Seeley et al. 2015, 51 22 14 N 1 05 53E, 1 specimen); Querqueville, Normandy/France/Cherbourg Harbor (2008, Dauvin 2009; Dauvin and DuFosse 2011); Salines, Normandy/France/Cherbourg Harbor (2008, Dauvin 2009; Dauvin and DuFosse 2011); Gatteville-Phare, Normandy/France/English Channel (2008, Dauvin 2009); La Hougue, Normandy/France/English Channel (2008, Dauvin 2009); Le Havre/France/English Channel (1999, Breton et al. 2004); Berck/France/English Channel (04/09/2008, Dauvin et al. 2009; Dauvin and DuFosse 2011; 50 23'36"N, 1 ;33'27"E); Boulogne/France/Boulogne Harbour (4/24/2008, Dauvin et al. 2009, Dauvin and DuFosse 2011; 50 43'41"N, 1 35'49"E); Dunkirk/France/Dunkirk Harbour (5/6/2008, Dauvin et al. 2009, Dauvin and DuFosse 2011, 51 03'03"N, 2 22'16"E, Gothland et al. 2013; Belgium-Netherlands (le Pays Bas)/North Sea; Knokke-Heist, Nieuwpoort/Belgium/North Sea (2007, Kerckhof et al. 2007); Thomton Bank Wind Farm, 30 km offshore/Belgium/North Sea (2011-2012, de Mesel et al. 2015, 51 32 52.73500 N, 2 55 46.27300E, occasional); Netherlands/Wadden Sea (1994, Gittenberger et al. 2010); Norderney, Lower Saxony/Germany/Wadden Sea (11/2007, Obert et al. 2007); Isle of Sylt/Germany/Wadden Sea (2007, Landschoff et al. 2013); Bensersiel/Germany/Wadden Sea (2009, Buschbaum et al. 2012); Wilhelmhaven-Borkum/Gemany/Wadden Sea (2014, Rohde et al. 2017); Helgoland/Germany/North Sea (2007, Jungblut et al. 2017)