Midwater trawling

Midwater trawling

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 trawling is also known as pelagic trawling and bottom trawling as benthic trawling.

External images
Midwater trawl

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) and semi-pelagic fish such as: cod, squid, halibut and rockfish[disambiguation needed ].

Whereas bottom trawling can leave serious incidental damage to the sea bottom in its trail, midwater trawling by contrast is relatively benign.

See also

References

External links



Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Trawling — is a method of fishing that involves pulling a large fishing net through the water behind one or more boats. The net that is used for trawling is called a trawl.The boats that are used for trawling are called trawlers. Trawlers vary in size; from …   Wikipedia

  • midwater trawl — a net towed through the water column by one boat, the net being positioned above the bottom and below the surface. It may have otter doors that function to keep the net mouth open and depressor plates that function to make it fish deeper, or two… …   Dictionary of ichthyology

  • Bottom trawling — The Celtic Explorer, a research vessel engaged in bottom trawling …   Wikipedia

  • Commercial trawler — A commercial trawler is a commercial fishing vessel designed to operate fishing trawls. TrawlingTrawling is a method of fishing that involves actively pulling a trawl through the water behind one or more trawlers. Trawls are fishing nets that are …   Wikipedia

  • Maritime history of California — History of California This article is part of a series Timeline …   Wikipedia

  • List of fishing topics by subject — This page is a list of fishing topics by subject. Most fishing articles have a side bar at the top right. This page mirrors the topics in the side bars. See also: List of fishing topics and Fisheries glossary   Contents:… …   Wikipedia

  • Aquaculture — installations in southern Chile Aquaculture, also known as aquafarming, is the farming of aquatic organisms such as fish, crustaceans, molluscs and aquatic plants …   Wikipedia

  • Mariculture — Fish cages containing salmon in Loch Ailort, Scotland. Mariculture is a specialized branch of aquaculture involving the cultivation of marine organisms for food and other products in the open ocean, an enclosed section of the ocean, or in tanks,… …   Wikipedia

  • Fish sauce — Thai fish sauce Fish sauce is a condiment that is derived from fish that have been allowed to ferment. It is an essential ingredient in many curries and sauces. Fish sauce is a staple ingredient in numerous cultures in Southeast Asia and the… …   Wikipedia

  • Fish farming — Intensive koi aquaculture facility in Israel Fish farming is the principal form of aquaculture, while other methods may fall under mariculture. Fish farming involves raising fish commercially in tanks or enclosures, usually for food. A facility… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”