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Voyager SHARKS

机译:旅行者鲨鱼

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Built for Survival Sharks come in a variety of sizes. The largest is the whale shark, a whopper of a shark that can grow to 60 feet in length. That's almost the size of a bus! The smallest shark is the dwarf lantern shark, it is only six to seven inches long. Most fish have calcified bones, similar to human bones. But 400 million years ago, a few fish, including the ancestors of modern sharks, lost bones that were then replaced with a calcified cartilage skeleton. Cartilage is the flexible material that forms the end of your nose and ears. Its strength, flexibility, and light weight gave sharks advantages in the compcti-tion for life in the ocean.
机译:专为生存鲨鱼打造的鲨鱼有多种尺寸。最大的是鲸鲨,可以长到60英尺长的鲨鱼弥天大谎。那几乎是一辆公共汽车的大小!最小的鲨鱼是矮灯笼鲨,只有六到七英寸长。大多数鱼的钙化骨骼与人的骨骼相似。但在4亿年前,包括现代鲨鱼的祖先在内的几条鱼失去了骨头,然后被钙化的软骨骨骼所取代。软骨是形成鼻子和耳朵末端的柔性材料。鲨鱼的强度,柔韧性和轻巧的特点使其在海洋生物生活中具有优势。

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