This bryozoan colony, Watersipora subtorquata, was discovered in the Queen Elizabeth II marina, St. Peter Port harbour, Guernsey, Channel Islands on 30 May 2007. It was growing attached to the south side of a pontoon next to the south wall of the marina. This species is an invasive species that probably arrived on a boat's hull from France. It is native to the western Atlantic and the Caribbean. It has already been introduced to the Californian coast of the Pacific Ocean. This image shows the feeding lophophores extended. This specimen was identified by John Ryland, Emeritus Professor of Marine Biology at the University of Wales Swansea, and Dr. Joshua Mackie of the Moss Landing Marine Laboratories, California, USA.
File No. 300507
watersipora subtorquatabryozoanlophophoresCheilostomatast. peter PortGuernseychannel islandsenglish channelinvasive species30 May 2007bryozoawatersiporaWatersiporidaequeen elizabeth II marinaharbourpontoonfeeding lophophoresinvasivealienintroducedmarine lifemarine invertebrateGymnolaemataAscophoraectoprocta
From Guernsey Bryozoa