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COMMERCIAL Commercial is a worldwide enterprise that involves the capture of marine and freshwater fish and shellfish and their preparation for market. Fishing equipment ranges from small boats whose nets are cast and hauled in by hand to factory ships equipped ....

Middle of Essay
.... as SHELLFISH - shrimp, lobster, scallops, oysters, clams, crabs, mussels, and squid. WHALING was once a major part of the fishing industry. Overfishing has endangered many whale numbers, however, and the field has lessened in importance. Almost all large pelagic and demersal fish catches are made over or near the continental shelf, the underwater plateau around the continents and large islands. In these waters temperatures, water depths, and the currents that influence the amounts of available food create an environment that is highly favourable to the existence of large schools of fish. The animals living in and on the bottom of the c ....