The survey aims to collect data on distribution and relative abundance, with biological information, on commercial and other fish and invertebrate species in the German exclusive economic zone in the North Sea. Possible changes due to the increasing industrialization are to be detected. An annual exchange between the demersal trawl and the beam trawl is taking place.Gear: Demersal trawl (Cod hopper) with 200 mm rubber discs, 20 mm mesh in the cod-end, haul duration 30 min7 meter beam trawl with 5 ticklers, 20 mm mesh in the cod-end, 80 mm mesh in the net, haul duration 15 min.Data are structured in 2D. However, by the value of water pressure the vertical axis is given.