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海洋生物資料!!!!!

我今天要做作文,題目是海洋生物,快快作給我抄!(超超超~起急!!!!!!!!!!!)

2 個解答

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  • 最愛解答

    The Story of Sea Lions & Fur SealsThere are over a dozen or so different species of sea lions and fur seals around the world. Four of these species are found in waters off the western coast of North America.The sea lions are the California and the Steller's, the northern, or Alaskan fur seal, and the very rare Guadalupe. The Guadalupe fur seal was long thought to be extinct but it survived, and now several hundred come yearly to Guadalupe Island off Lower California to breed. All the other species live in the Southern Hemisphere.Both species have tiny outside ears and streamlined bodies. The males, always much larger than the females, gather harems (groups of females) during the breeding season. Fur seals have thick coats of soft underfur with an overlying covering of coarser guard hairs, while sea lions have thinner coats of short, coarse hair.The California sea lions is the species most commonly exhibited in zoos and circuses around the world, for it can be trained to do many different kinds of tricks in time by professionals. A large population lives off the coast of California, where it breeds on small islands or on rocky coastal areas. Males sometimes reach a length of 8 feet and weigh about 600 pounds however females seldom weigh half that much.The Steller's sea lions is considerably quite a bit larger than the California species when fully grown. It lives and thrives mainly along the Pacific coast, from northern California to islands off Alaska, and in northern Japan.

  • 9 年前

    海洋生物是指海洋里的各种生物,包括海洋动物、海洋植物、微生物及病毒等,其中海洋动物包括无脊椎动物和脊椎动物。无脊椎动物包括各种螺类和贝类。有脊椎动物包括各种鱼类和大型海洋动物,如鲸鱼,鲨鱼等。海洋生物富含易于消化的蛋白质和氨基酸。食物蛋白的营养价值主要取决于氨基酸的组成,海洋中鱼、贝、虾、蟹等生物蛋白质含量丰富,富含人体所必需的9种氨基酸,尤其是赖氨酸含量更比植物性食物高出许多,且易于被人体吸收。

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