螺旋状像个鱼雷：鲨鱼卵原来长这样！-快科技-科技改变生活

螺旋状像个鱼雷：鲨鱼卵原来长这样！

上方文Q
2016年11月01日 22:42
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大千世界无奇不有。今天，我们来见识见识鲨鱼卵，确切地说是虎鲨之类的卵。

鲨鱼有卵生、卵胎生、假胎生三种繁殖方式，没有真正的胎生，而鲨鱼卵形态都比较奇特，比如虎鲨的，外表呈螺旋状，还有粗丝，像个鱼雷。

这么长的好处是卵可以牢牢地固定在礁石或者海草上，防止四处漂流，另外还有厚厚的卵鞘，可以抵抗捕食者。

这些卵的孵化器从几天到几星期不等，之后鲨鱼就会离开幼仔，让它们独立生存。

螺旋状像个鱼雷：鲨鱼卵原来长这样！

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#鲨鱼 #动物

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