WTT members will have seen an article in the Autumn newsletter describing how to tell the difference between a brown trout and a sea trout. They are the same species, but with different life strategies and telling them apart is not as easy as you might think.
You can read the article here.
Paul Kenyon of Snowbee and Fly Fishing Devon has taken the question further in this interesting web page .Another interesting article on the remarkable flexibility of trout and their migration habitats will appear in our journal, Salmo Trutta, which will be sent to members in early May.(You can join as a member here.)