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1: trawl warp, 2: otter boards, 3: longline chains, 4 hunter, 5: weights 6: headline with floats, 7: pre-net, 8: tunnel and belly, 9: codend. Midwater trawling is trawling, or net fishing, at a depth that is higher in the water column than the bottom of the ocean. It is contrasted with bottom trawling.
Midwater (pelagic) trawling is a much "cleaner" method of fishing, in that the catch usually consists of just one species and does not physically damage the sea bottom. However, environmental groups have raised concerns that this fishing practice may be responsible for significant volumes of by-catch, particularly cetaceans (dolphins, porpoises ...
A fishing trawler is a commercial fishing vessel designed to operate fishing trawls. Trawling is a method of fishing that involves actively dragging or pulling a trawl through the water behind one or more trawlers. Trawls are fishing nets that are pulled along the bottom of the sea or in midwater at a specified depth. A trawler may also operate ...
Paired trawling was prohibited in 1977 in an effort to limit the impacts of fishing on the seabed. Restrictions on the lengths and hook spacing of longlines were introduced in 1994. Limits on the size and weight of bobbins and foot ropes were introduced in 2003, again in an effort to reduce the impacts of fishing on seabed habitats.
Gillnetting was an early fishing technology in colonial America, [vague] used for example, in fisheries for Atlantic salmon and shad. [10] Immigrant fishermen from northern Europe and the Mediterranean brought a number of different adaptations of the technology from their respective homelands with them to the rapidly expanding salmon fisheries ...
In the video, the kayaker can be seen being stalked by a great white shark off the coast of Northland, New Zealand.
In midwater trawling a cone-shaped net is towed behind a single boat and spread by trawl doors (image), or it can be towed behind two boats (pair trawling) which act as the spreading device. Midwater trawling is relatively benign compared to the damage bottom trawling can inflict on the sea bottom. Plankton net: Plankton
Week 3: Missed pass interference on Kyle Pitts. The Chiefs got away with one late in a win at the Atlanta Falcons. Safety Bryan Cook clearly committed a pass inference penalty on Pitts in the end ...