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
Norse activity in the British Isles in the country. For this reason, historian Peter Hunter Blair noted that in Britain, the archaeological evidence for Norse invasion and settlement was "very slight compared with the corresponding evidence for the Anglo-Saxon invasions" of the 5th century. Norse activity in the British Isles Norse activity in the British Isles occurred during the Early Medieval period when members of the Norse populations of Scandinavia travelled to Great Britain and Ireland to settle, trade or raid. The Norsemen who came to the British Isles have been generally referred to as Vikings, but it is debated whether the term "Viking" represented all