Crabs of the British Isles (29,193 t), various swimming crabs (3,180 t), the spider crab "Maja squinado" (1,565 t), the shore crab or green crab "Carcinus maenas" (553 t) and the velvet crab "Necora puber" (193 t). Around 77% of the catch is landed in the United Kingdom, 19% in Ireland, 4% in the Channel Islands, and 1% in the Isle of Man. 62 species have been directly observed in the waters of the British Isles: Three deep-water species have also been recorded near the British Isles, and are likely to occur in the area. These are: Crabs of the British Isles Around 65 species
Lists of mountains and hills in the British Isles Lists of mountains and hills in the British Isles The mountains and hills of the British Isles, are categorised into lists based on elevation (or "height"), prominence (or "relative height", or "drop"), and other criteria (e.g. isolation). These lists are used for peak bagging, whereby hillwalkers attempt to reach all the summits on a list, the oldest and best-known, being the 282 in Scotland, which amongst other criteria, must be above . A height above 2,000 ft, or more latterly 600 m, is considered necessary to be a "mountain" in the British Isles, and apart from the Munros (who favour