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Bottom trawling (known in the scientific community as Benthic trawling) is a fishing method which involves towing trawl nets along the sea floor, as opposed to pelagic trawling, where a net is towed higher in the water column. Bottom trawling can be carried out from one vessel or two vessels fishing cooperatively. It is practiced from a very wide range of fishing vessels, starting with small motor boats powered by engines of several tens of horsepower and up to large ocean-going trawlers, up to 100 m long, and powered by engines of several thousand horsepower.