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
Legal basis of official statistics in Switzerland competence which allows parallel statistical activities by the federal authorities and the cantons under the coordination of the federal government. Date of entry into force: 1 August 1993 (Federal Council Decree of 30 June 1993) Sources Legal basis of official statistics in Switzerland The legal basis of official statistics in Switzerland is the Swiss Federal Constitution. Article 65 of the Swiss Federal Constitution sets out the mandate and competencies of official statistics. The legal bases of Swiss official statistics are set out in more detail in the Federal Statistics Act of 9 October 1992. The Federal Statistics Act formulates the