hammerhead sharks

Hammerhead sharks swim toward a ' cleaning station , " where small fishes help them to get rid of parasites , Cocos Island , Costa-Rica

锤头鲨游向一个“清洗站”，那里小鱼帮助他们摆脱寄生虫，哥斯达黎加的可可岛

BOB DOUGHTY : Hammerhead sharks have nostrils that are more widely spaced than those of sharks with pointed noses .

比起尖鼻子的鲨鱼来说，双髻鲨的鼻孔相距比较宽。

Ultraviolet rays don 't just bronze sunseekers on the beach . Underwater , they can give hammerhead sharks a suntan .

紫外线不仅能将沙滩上的游客晒成古铜色，还能将水下的双髻鲨染成棕色。

I also learned that some of the biggest sharks are not carnivores , so they don 't attack like the really vivious ones , like Great White sharks or Hammerhead sharks .

我也知道了最大型的鳌鱼中，有些并非食肉性动物，不会像穷凶恶极的大白笙或双髻鳌一样具有攻击性。

If Google has its way , hammerhead sharks will swim through your office , elephants will fit in the palm of your hand and dragons will fly among the birds .

如果事情遂了谷歌（Google）的心愿，那么双髻鲨就可以在你的办公室里游动，大象可以站在你的手心里，龙也会和群鸟一起飞翔。

It was discovered in 1987 by a group of divers who were there to observe Hammerhead sharks , and it immediately sparked a huge amount of debate in the Japanese scientific community .

1987年一群观测双髻鲨（Hammerhead）的潜水者发现了与那国岛海底地形，此后立即引起了日本学界激烈的讨论。

On the other hand , parthenogenesis ( the scientific term for virgin birth ) is common among other creatures in nature . Hammerhead sharks , komodo dragons , mole salamanders , and an assortment of other reptiles , fish and insects can all produce offspring without mating .

不过在自然界，生物体的孤雌生殖（处女生育的学名）十分普遍，锤头鲨、科莫多巨蜥、摩尔蝾螈和其他种类的爬行动物、鱼类以及昆虫都可以不经交配，直接繁殖。

Some species of shark have been depleted by70 per cent and a few , such as smooth hammerhead , bull sharks and tiger sharks , by90 per cent or more .

一些种类的鲨鱼数量已减少了70%，少数几个种类的数量减少了90%，例如平双髻鲨、牛鲨和虎鲨。