This attaches to a rock or another solid surface where it continues to grow, becoming a polyp.

幼水母附或者其他坚硬的表面上继续生长，成为水螅。

He's also a polyp, bristling and squishy, a creature Picasso himself called a turd.

他本人则像只竖着刚毛粘乎乎的水螅，对这个生物，毕加索称之为一坨屎。

These polyparies were sticking to rocks, shells of mollusks, and even the stalks of water plants.

这些水螅丛附上，软动物的介壳上，并且附蛇婆茎上。

But hydra have neural nets of diffuse brain cells, rather than a dense organ-like we have.

但水螅有弥漫的脑细胞构成的神经网络，而不像我们有一个密集的器官。

This is because they are spawned from polyps on the seabed.

这是因为它们是从海底的水螅中产生的。

This year, a group of Japanese scientists demonstrated that hydras sleep.

今年，一群日本科学家 证明了水螅睡觉。

The polyps provide a home and the basic ingredients the algae need to survive.

水螅为藻类提供了栖息地生存所需的基本成分。

Coral is made of tiny transparent animals called polyps, with thousands of them in each chunk.

珊瑚由称为水螅的微小透明动物组成，每个块中有数千个。

Even the tops of the mountains are blessed with flowers, -dwarf phlox, polemonium, ribes, hulsea, etc.

就连山顶也开满了鲜花——矮福禄考、极地菊、葶苈、水螅等。

Instead of a brain, hydras have nerve nets, the most basic nervous systems in nature.

水螅没有大脑，而是拥有神经网络 ，这是自然界中最基本的神经系统。

To get the energy and nutrients they need to grow, the polyps team up with algae called zooxanthellae.

为了获得生长所需的能量，水螅与称为虫黄藻的藻类合作。

No decline in fertility, or increase in mortality, was observed at any point in the hydra life cycle.

水螅生命周期的任何时候都没有观察到生育率下降或死亡率增加。

Hydra have thin, parallel actomyosin fibers running throughout their body, like our muscle tissue.

水螅有细而平行的肌动球蛋白纤维遍布全身，就像我们的肌肉组织一样。

See, hydra bodies are really simple: one head and one foot lined up along a single body axis.

看，水螅的身真的很简单：一个头一只脚沿着一个身轴排成一行。

But unlike butterflies, if Turritopsis get wounded or if times get tough, they can morph backwards, reverting to their immature polyp form until conditions improve.

而与蝴蝶不同的是，如果受伤或者生存条件恶劣，灯塔水母们可以回到之前的阶段，状况改善之前变回它们非成熟期时类似水螅虫的样子。

Every cell in a hydra’s body is replaced every three to four weeks, by fresh cells produced by brand new stem cells.

水螅内的每个细胞每三到四个星期就会被全新干细胞产生的新鲜细胞更换一次。

Like some giant tortoises that can reach near 200 years and some small freshwater animals of the genus Hydra that appear not to age at all.

像一些巨型龟的寿命能活到将近两百岁，还有一些水螅属的淡水小动物，它们看起来一点也没有走向衰老的痕迹。

The alignment of actomyosin fibers in the spheroid lays out a structure that gets inherited throughout the new hydra’s body.

球状中肌动球蛋白纤维的排列构成了一种结构，该结构整个新水螅内得到遗传。

In the case of the immortal jellyfish, after it reaches its mature adult stage it can revert back to the polyp stage before growing into an adult once again.

以永生的水母为例，达到的性成熟的成年阶段后，它可以转化回水螅阶段，然后再次长成成年水母。

And even though hydra regeneration is a little more extreme, it’s similar to how we humans heal wounds and develop as embryos.

尽管水螅的再生有点极端，但它类似于我们人类治愈伤口发育成胚胎的方式。