information on the biology of species and the ecology of habitats found around the coasts and seas of the British Isles

The page you requested was not found

If you see this page after following a link on another website, it is possible that the page you requested has moved.  We have redesigned and restructured the website. Therefore, the content has been reorganized and moved.  Our apologies for any inconvenience but the revised site is now even easier to navigate. Please use the above menus to find the page you were looking for. The entire site can be searched from the search box in the menu above. Alternatively, use the quick links below.

Species information: Species A-Z Species list  

Habitat (or biotope) information: Habitat A-Z Habitat list

Publications: Publications

Discontinued content

Regrettably, some content is discontinued because the information has been superceded or due to lack of funds. 

The Marine Aliens II website - is no longer available. The information has been superceded by the GB Non-Native Species Information Portal (GNNNSIP) ( The original site is archived on the UK Web Archive under the  MarLIN website 2013 (

If you have the time, we would be grateful if you could let us know how you got to this page so that we can contact the site in question.  Please let us know the URL you followed and the URL of the website you were using. Please contact us via

Thank you for your patience.