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Midwater trawling catches pelagic fish such as anchovies and mackerel, whereas bottom trawling targets both bottom-living fish and semi-pelagic species such as cod, squid, shrimp, and rockfish. Trawling is done by a trawler , which can be a small open boat with only 30 hp (22 kW) or a large factory trawler with 10,000 hp (7,500 kW).
Bottom trawling is towing the trawl along (benthic trawling) or close to (demersal trawling) the sea floor. Bottom trawling is an industrial fishing method in which a large net with heavy weights is dragged across the seafloor, scooping up everything in its path. Bottom trawling can be disadvantageous because it can stir up significant amounts ...
Wild fish catch by gear type, World. Among the major fishing techniques bottom trawling is a destructive one. Fishing techniques are methods for catching fish. The term may also be applied to methods for catching other aquatic animals such as molluscs (shellfish, squid, octopus) and edible marine invertebrates.
Trawling – is fishing with a large bag-like net, called a trawl, which is drawn along behind a boat called a trawler. The net can be dragged along the sea bottom in order to target demersal fish, or pulled through clear water in order to target pelagic fish. Trawling along the sea bottom can result in significant bycatch and habitat destruction.
The method can be used both with handlining and rod fishing, and can be done both from boats and from the land. The weight can also be used to cast the line to a further, more appropriate distance at deeper water away from the shoreline. Specialized fishing rods called bottom rods or "donkas" are also commonly used for bottom fishing. In the UK ...
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 ...
Bottom fishing – Bottom fishing, called legering in the United Kingdom, is fishing the bottom of a body of water. Tackle – the equipment used by fishermen when fishing. Techniques – Fishing techniques are methods for catching fish. Tournaments – A fishing tournament, or derby, is an organised competition among anglers. Traditional ...
A stern trawler tows a fishing trawl net and hauls the catch up a stern ramp. These can be either demersal (weighted bottom trawling); pelagic (mid-water trawling); or pair trawling, where two vessels about 500 metres apart together pull one huge net with a mouth circumference of 900 meters.