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
History of the British Isles known as the Old and Middle Stone Ages, were characterised by a hunter-gatherer economy and a reliance on stone tool technologies. The Lower Palaeolithic period in the British Isles saw the region's first known habitation by early hominids, specifically the extinct Homo heidelbergensis. One of the most prominent archaeological sites dating to this period is that of Boxgrove Quarry in West Sussex, southern England. By the Mesolithic, "Homo sapiens", or modern humans, were the only hominid species to still survive in the British Isles. British Isles were linked to continental Europe by a territory named Doggerland. In the British Isles,