海牛类 [
hǎi niú lèi]
sirenian
- 产于美洲热带沿海水域的海牛类哺乳动物。
sirenian mammal of tropical coastal waters of America; the flat tail is rounded. - 海牛鲸通过挖掘泥沙寻找蠕虫和甲壳类动物吃。
By grubbing around in the mud, Odobenocetops found worms and shellfish to eat. - 保护区为许多珍稀濒危动物提供保护,例如巨骨舌鱼、亚马逊海牛、黑凯门鳄和两种淡水豚类。
The site protects key threatened species, including giant arapaima fish, the Amazonian manatee, the black caiman and two species of river dolphin.
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