Triskelion Triskelion A triskelion or triskele is a motif consisting of a triple spiral exhibiting rotational symmetry. The spiral design can be based on interlocking Archimedean spirals, or represent three bent human legs. Both terms are from Greek ("triskelion") or ("triskeles"), "three-legged", from prefix "τρι-" ("tri-"), "three times" + "σκέλος" ("skelos"), "leg". A triskelion is a traditional symbol of Sicily, where it is called "trinacria"; the Isle of Man, where it is known in Manx as "Tree Cassyn Vannin", and Brittany where it is known as "Triskèle". Ingushetia also has a (stylised) triskelion in its flag. The triskelion symbol appears in
Introduced species of the British Isles damage. Case studies of impact examples can be found at the Non-native Species Secretariat website. Information on control methods for aquatic species can be found at the GB Non-native Species Secretariat website. One notable example of a species introduced to the British Isles is the grey squirrel from North America, which out-competes the smaller native red squirrel, as well as carrying a virus that is fatal to the reds. The cost of attempting eradication was reported in 2010 to be £14 million. These attempts have been deemed unsuccessful and priority is now being given to preserving the remaining red squirrel