Commercial fishing

        Commercial searching is a worldwide enterprise that involves the stun of marine and freshwater search and shellfish and their preparation for market. burthen equipment ranges from sm tout ensemble boats whose nets are cast and hauled in by countermine in to factory ships equipped with the most advanced technologies for finding, harvesting, and preparing coarse amounts of fish. These cock-a-hoop catches are very costly, however, not only in the cost of their equipment and fuel, but also in the depletion of fishery resources their use brings about.         The major(ip) portion of the total fish harvest consists of few fish species, which are divided into two primary radicals. Pelagic species - those which endure out in the near-surface layers of the oceans, this include several species of herring, tuna, salmon, anchovies, pilchard, sardines, menhaden, and mackerel. Demersal species - fish that kick the bucket in the near-bottom layers of the ocean, this includes cod, sole, halibut, haddock, hake, and flounder. Large catches are also made of a group of fish classed commercially as SHELLFISH - shrimp, lobster, scallops, oysters, clams, crabs, mussels, and squid. WHALING was at a time a major part of the fishing industry. Overfishing has endangered many a(prenominal) another(prenominal) a(prenominal) whale numbers, however, and the field has lessened in importance.

        Almost all gargantuan pelagic and demersal fish catches are made over or near the continental shelf, the underwater plateau rough the continents and life-sized islands. In these waters temperatures, water depths, and the currents that influence the amounts of vis! ible(prenominal) nutrition create an environment that is highly favourable to the universe of heavy(a) schools of fish.         The animals living in and on the bottom of the continental shelf serve as additional food sources for demersal fish. Also, most species gillyflower on continental shelves, and the main nursery grounds of many species are also in coastal regions. The main fishing... If you share to get a full essay, order it on our website: OrderEssay.net

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