Triskelion a Triskele composed of three sevens as its symbol in place of the Nazi Swastika. The Flag of the Isle of Man bears 3 legs based on the Triskele. The crest of the Breton football club En Avant de Guingamp combines the Flag of Brittany, the team colours and the triple spiral triskelion. "The Gamesters of Triskelion" is a second-season episode of the American science fiction television series "Star Trek". In the Marvel Universe, the intelligence agency S.H.I.E.L.D. uses the Triskelion as its headquarters . The Triskele is also used as a prominent symbol in MTV's "Teen Wolf (2011 TV
Crabs of the British Isles Crabs of the British Isles Around 65 species of crab occur in the waters of the British Isles. All are marine, with the exception of the introduced Chinese mitten crab, "Eriocheir sinensis", which occurs in fresh and brackish water. They range in size from the deep-water species "Paromola cuvieri", which can reach a claw span of , to the pea crab, which is only wide and lives inside mussel shells. Several species of wild crab are the subject of crab fisheries around the coasts of the British Isles. The most important are the brown crab or edible crab, "Cancer pagurus"