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The Chinese reputedly learned the techniques from the fishermen of Southeast Asia. In India, otter fishing was practiced in the Indus and Ganges river basins, in Bengal and in South India along the Coromandel Coast. [2] [3] Otter fishing was known in Europe from as early as the 16th century. The Scandinavians trained otters for catching trout.
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.
The otter is a fishing device constructed with two parts, an otter board and a fishing line. It is steered by pulling on the line then letting stack so the slide mechanism on the board operates to switch direction. It may be used from a boat or pulled from the shore. It is very difficult to retrieve from a boat once fish are on.
Fish trappers continued to overharvest for decades until, in the name of conservation, Washington state officially outlawed all fish traps in 1934, including reef nets.
Pair trawling is a fishing activity carried out by two boats, with one towing each warp (the towing cables). As the mouth of the net is kept open by the lateral pull of the individual vessels, otter boards are not required.
Bottom fishing has operated for over a century on heavily fished grounds such as the North Sea and Grand Banks. While overfishing has long been recognised as causing major ecological changes to the fish community on the Grand Banks, concern has been raised more recently about the damage which benthic trawling inflicts upon seabed communities. [16]
OSHKOSH — Warmer temperatures have put a damper on many winter events, including the Otter Street Fishing Club's Winter Fisheree, set to take place Feb. 3 at Miller's Bay. The event will go on ...
In fish trawls, the grid is mounted so the smallest organisms (juvenile fish, shrimp) pass through the grid and enter the sea again. In shrimp trawls, the grid pushes the largest organisms (fish) through a hole in the roof of the net, reducing by-catch of fish. The latter type of grid is mandatory in Norway and has been in use for 20 years. [11]