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  2. Bottom trawling - Wikipedia

    en.wikipedia.org/wiki/Bottom_trawling

    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).

  3. Trawling - Wikipedia

    en.wikipedia.org/wiki/Trawling

    Midwater trawling catches pelagic fish, whereas bottom trawling targets both bottom-living fish and semi-pelagic fish. The gear itself can vary a great deal. Pelagic trawls are typically much larger than bottom trawls, with very large mesh openings in the net, little or no ground gear, and little or no chaffing gear.

  4. Unsustainable fishing methods - Wikipedia

    en.wikipedia.org/wiki/Unsustainable_fishing_methods

    Commercial fishing showing the abundance of fish species caught using a trawling method. Unsustainable fishing methods refers to the use of various fishing methods to capture or harvest fish at a rate that is unsustainable for fish populations. [1] These methods facilitate destructive fishing practices that damage ocean ecosystems, resulting in ...

  5. Fishing trawler - Wikipedia

    en.wikipedia.org/wiki/Fishing_trawler

    A trawling boat can be a small open boat with only 30 horsepower (22 kW) or a large factory ship with 10,000 horsepower (7457 kW). Trawl variants include beam trawls, large-opening midwater trawls, and large bottom trawls, such as "rock hoppers" that are rigged with heavy rubber wheels that let the net crawl over rocky bottom.

  6. Midwater trawling - Wikipedia

    en.wikipedia.org/wiki/Midwater_trawling

    In midwater trawling, a cone-shaped net can be towed behind a single boat and spread by trawl doors, or it can be towed behind two boats (pair trawling) which act as the spreading device. Midwater trawling catches pelagic fish such as anchovies , shrimp , tuna and mackerel , whereas bottom trawling targets both bottom living fish ( groundfish ...

  7. Environmental impact of fishing - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.

  8. Destructive fishing practices - Wikipedia

    en.wikipedia.org/wiki/Destructive_fishing_practices

    Destructive fishing practices are fishing practices which easily result in irreversible damage to habitats and the sustainability of the fishery ecosystems.Such damages can be caused by direct physical destruction of the underwater landform and vegetation, overfishing (especially of keystone species), indiscriminate killing/maiming of aquatic life, disruption of vital reproductive cycles, and ...

  9. Glossary of fishery terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_fishery_terms

    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.