Invasion

Invasion Description

1st Record: Swansea/Wales/Irish Sea (1959, in a heated dock, Ryland 1960).  Bugula neritina apparently disappeared from British waters in the 1960s possibly because of severe winters or cool summers, but reappeared or was rediscovered, by 2004 in Arenas et al.'s (2006) surveys. By 2011, it was widespread on Britain's south coast and present at at least seven locations further north on the Irish Sea, to Wales, Scotland and Ireland (Ryland et al. 2011).

Geographic Extent

Largs Marina/Scotland/Firth of Clyde (6/8/2006, Ryland et al. 2011; Rouse et al. 2018); Milford Marina, Milford Haven/Wales/Irish Sea (9/2009, Ryland et al. 2011); Holyhead/Wales/Irish Sea (2009, Ryland et al. 2011); Swansea/Wales/Irish Sea (1959, in a heated dock, Ryland 1960);Crrickfergus Marina/Northern Ireland/Belfast Lough (2012, Porter et al. 2017); Carlingford Marina/Northern Ireland/Carlingford Lough, Irish Sea (2008, Ryland et al. 2011); Malahide Marina/Ireland/Irish Sea (2005, Ryland et al. 2011);; Cork/Ireland/Irsih Sea (2021, O'Shughnessy et al. 2023); Shoreham-by-Sea/England/English Channel (1959, in a heated dock, Ryland 1960); Brighton/England/English Channel (2004, Arenas et al. 2006); Gosport/England/English Channel (2004, Arenas et al. 2006); Poole/England/English Channel (2004, Arenas et al. 2006); Weymouth/England/English Channel (2004, Arenas et al. 2006); 7 marinas, East Anglia/England (2015, Wood et al. 2016); Oostende/Belgium/North Sea (1999, Kerckhof et al. 2007); Burghsluis/Netherlands/North Sea (Ryland et al. 2011); Bassin de la Citadelle, Le Havre/France/English Channel (2005, Ryland et al. 2011); Homum, Isle of Sylt/Germany/Wadden Sea (2010, Buschbaum et al. 2012)