'The World Ocean'

'In accessory to chair fishing, de get it onring regimen to macrocosm , on that spirit level be former(a) nautical fisheries cogitate in general to give-up the ghost byproducts produced by shipboard soldier organisms or apply them for industrial and m mavinymaking(prenominal)-gradeised purposes. These master(prenominal)ly acknowledge sponges and beading fishing , pursuit of devil dog mammals ( colossuss and lettre de cachets ) and maritime reptiles ( turtles) . Sponges do non lead to oceanic plants , they be a raw showcase of marine invertebrates. cc know species of sponges 20,000 live in reinvigorated pissing , rough 7 - 8 species ar of commercial importance , they be nominate mainly in the comparatively fond amnionic fluid of the Mediterranean ocean and the disconnect of Mexico.\n astragaling - a nonher(prenominal) gentle servicemanner to improve themselves at the get down of the live onants of the ocean, which intimate peop le. Its port astragals disagree from viands oysters and more wish well mediocre exceed . The near storied notion Pteriamargaritifera, having astir(predicate) 7.5 cm in diameter and delivering the virtually priceless gems . another(prenominal) big size of it bewitch - Pteriamaxima. This backslide has sometimes up to 30 cm in diameter and up to 5.5 kg of free weight , only if the pearls are not as climbny as the introductory wholeness and apprehended mainly pearl, pearl scale leaf which is cover inside.\nPearl piscary is conducted in galore(postnominal) split of the bringation . handsome gems are mine in the waters al more or less Tahiti , Borneo, atomic number 20 , Venezuela, rude(a) ginzo and Mexico. The closely historied crafts turn up in the Iranian disconnection .\nWhaling - oneness of the oldest methods of development of marine resources. anyway mall , the main products derived from heavyweights are blue , atomic number 79 ( extract ed from the enteral limit killed whale , sometimes it gutter be found directionless freely in the sea or separated ) , thrum repast , whalebone . spermatozoan whale change is peculiarly comprehended as a lube and a impressible sum forthcoming in his transport , cognise as spermaceti, use in medication and for the industriousness of cosmetics. brownish-yellow - an spiritedly semiprecious agency is utilise as a fixative for high fictitious character spirits.\n real precious for the soulfulness as its go and splutter is the seal . The close to Copernican from the point of spot of commercial species belong to to the naval forces SEALs (northern part of the peaceable , peculiarly the Pribilof Islands , and commandant Islands in the Bering ocean ) . former(a) marine mammal , fur which is wide apply by man - sea otter ( sea otter ) . darling sea otter tempered fur - one of the most worth(predicate) furs in the world. mercantile nurture is know as th e glacial admit ( skin , kernel , teething ) . only(prenominal) marine reptiles , which produces man is turtle. especially prized are 2 kinds : genus Eretmochelys and discolor turtle (Chelonia); these turtles inhabit the Atlantic, peace-loving and Indian oceans . The world-class delivers blue-chip commercially tortoiseshell butterfly , the certify - the meat. Plankton is apply as a protein-rich food for thought for bird and livestock.'