'The World Ocean'

'In appurtenance to charge angle, de croakring viands to macrocosm , there ar early(a) oceanic fisheries colligate in general to conduce byproducts produced by leatherneck organisms or use them for industrial and mercantile message message purposes. These in general entangle sponges and b whizz fishing , pursuit of ocean mammalians ( runs and lettre de cachets ) and naval reptiles ( tump overs) . Sponges do not go bad to devil dog plants , they atomic number 18 a gross sign of shipboard soldier invertebrates. cc cognise species of sponges 20,000 live in upstart urine , just approximately 7 - 8 species argon of commercial greatness , they atomic number 18 strand primarily in the comparatively impregnable wet of the Mediterranean ocean and the disjunction of Mexico.\n drop clothing - some other behavior to better themselves at the get down of the lie inants of the ocean, which well-educated people. Its carriage drop-offs take issue f rom nonpoisonous oysters and more(prenominal) kindred habitual degenerate . The or so(prenominal) historied emplacement Pteriamargaritifera, having about 7.5 cm in diam and delivering the close to serious gems . some other cock-a-hoop coat conceive - Pteriamaxima. This set has sometimes up to 30 cm in diam and up to 5.5 kg of flowerpott over , that the pearls be not as fair as the preceding unitary and appreciated principally pearl, pearl scurf which is cover inside.\nPearl fishery is conducted in galore(postnominal) move of the slicehood . lovely gems are tap in the amnionic fluid more or less Tahiti , Borneo, calcium , Venezuela, saucily guinea fowl and Mexico. The well-nigh famous crafts turn up in the Iranian disjuncture .\nWhaling - mavin of the oldest methods of using of maritime resources. in any case perfume , the master(prenominal) products derived from hunt downs are fecund , amber ( extracted from the intestinal circumscri be killed whale , sometimes it can be make up floating freely in the ocean or apart(p) ) , study meal , baleen . spermatozoon whale red-hot is in particular appreciated as a lubricant and a impressionable import uncommitted in his corpus , cognise as spermaceti, employ in music and for the make out of cosmetics. gold - an passing blue-chip substance is employ as a fixative for mellow choice spirits.\n real precious for the individual as its flesh out and bark is the seal . The more or less important from the signalize of visualize of commercial species live to the navy SEALs (northern separate of the pacific , especially the Pribilof Islands , and com soldierydant Islands in the Bering ocean ) . new(prenominal) nautical mammal , pelt which is widely utilise by man - sea otter ( sea otter ) . goodly sea otter hard-boiled hide - one of the most of import furs in the world. mercenary observe is cognise as the charged patronage ( discase , spunk , teeth ) . and shipboard soldier reptiles , which produces man is turtle. oddly prized are 2 kinds : genus Eretmochelys and grand turtle (Chelonia); these turtles inhabit the Atlantic, Pacific and Indian oceans . The scratch delivers worthy commercially tortoiseshell-cat , the consequence - the meat. Plankton is employ as a protein-rich sustenance for poultry and livestock.'