These are leatherback sea turtle hatchlings, the largest species of turtle alive today.

这些是棱皮龟幼龟，是现存最大的海龟物种。

For a hatchling sea turtle, the answer is magnetoreception.

对于刚出壳的海龟来说，答案是磁感应。

In June, when the hatchlings emerge, they are vulnerable.

到六月，刚破壳的小鬣蜥异常脆弱。

Eggs and hatchlings, clumps of juveniles and then—further out—adults.

从恐龙蛋到刚出壳的新生命，从群幼崽到更往后的成年恐龙。

Another hatchling has its first glimpse of a dangerous world.

另只刚孵化的小鬣蜥次见识了这个危险的世界。

We would play in the hay, the constant tweeting of the hatchlings—a constant background symphony.

我们会干草中嬉戏，孵出的小鸟不停地鸣叫，这是不间断的背景交响乐。

Carnivores gulp down virtually every hatchling. But a few do make it.

捕食者几乎吃完了所有的小海龟。不过还是有几只幸存下来。

Down at the water's edge, hatchlings are taking their first swim.

水边，小海龟们正次游泳。

Thousands of defenseless hatchlings are let loose into a world of fierce predators.

数以千计没有保护的幼崽就这样来到了充满凶残肉食者的世界。

The hatchling is tiny compared to its gigantic parents.

刚孵出的幼崽与庞大的父母相比是如此瘦小。

When they are in the nest, the hatchlings start vocalizing from within the egg to synchronize hatch.

当还洞穴中时，为同步孵化其他幼龟，刚孵化的幼龟会壳内开始发。

In these colonies, a queen lays the eggs, and worker bees called nurses care for the resulting hatchlings.

这些蜂群中，蜂王产卵，被称为看护的工蜂负责照料孵化出来的幼蜂。

The mother returns and the hatchling announces, " You are a bird, and you are my mother" .

终于，鸟妈妈回来了，小鸟说：" 啊，你才是我的妈妈！"

Most meat eaters keep their distance from the hatchlings of an apex predator, but not this reptile.

大多数肉食动物都会远离顶级捕食者的幼崽，风神翼龙则不然。

A well-constructed egg makes it that much more likely that a hatchling will survive.

颗结构合理的恐龙蛋会使幼崽的成活率大大增加。

Right.So, sea turtles, and especially their hatchlings, often serve as prey for a lot of predators.

对。所以，海龟，尤其是它们的幼龟，经常成为许多捕食者的猎物。

So, if the sand is very hot and the eggs are above 31 degrees Celsius, the hatchlings will be female.

因此，如果沙子很热，蛋的温度超过31摄氏度，新孵化出的小海龟将是雌性的。

Stuck in the shovel's jaws, the hatchling appears doomed until, miraculously, the shovel lifts the bird back to its nest.

被卡挖掘机铲斗里的小鸟似乎劫难逃，但铲斗居然奇迹般地将它送回了鸟巢。

Egg-laying explains the huge size differences between the most colossal dinosaurs and their hatchlings.

产卵解释了最大的恐龙和它们的幼崽之间的巨大体型差异。

Being a hatchling, you don't have horns, you don't have plates, you don't have any kind of armor on the body.

刚孵化的幼兽，没有角和鳞片，身体上没有任何甲壳。