If you want a good example of this difference, look at the sea squirt.

如果你想要一个关于这种差异的好例子，就看看海鞘。

To illustrate this, Daniel uses the example of a sea squirt.

为了说明这一点，Daniel 举了一个海鞘的例子。

Early in its life, the sea squirt has a nervous system.

其命的初期，海鞘长有一个神经系统。

The skeleton panda sea squirt officially recognized even though " a-panda-ntly."

官方名字是骨熊猫海鞘，很明显。

That's right – once a sea squirt doesn't need to move anymore, it basically eats its own brain.

没错——一旦海鞘不再需要移动，它就会吃掉自己的大脑。

The skeleton panda sea squirt, the distinctive sea squirt first caught the attention of a researcher in 2018.

骨熊猫海鞘，这种独特的海鞘2018年首次引起了一位研究人员的注意。

For those of you who are homeschooled, sea squirts are translucent tubes that resemble gelatinous sacks.

对于那些家上学的朋友们，海鞘是些半透明的管状物， 看起来就像果冻袋子一样。

Meanwhile, a Scandinavian company that makes sustainable protein sources is asking, would you eat a burger made from processed sea squirts?

与此同时，一家产可持续蛋白质来源的北欧公司正：“你愿意尝试用加工过的海鞘制成的汉堡吗？”

At that point, movement is no longer a necessity for survival, so the very first thing that the sea squirt does is it digests its brain for energy.

此时，运动不再是存必需，所以海鞘定居下来以后的第一件事，就是把它自己的大脑吃掉为身体提供能量。

Some years I'll get biofouling, like sea squirts and things will stick to it really early, which really affects whether I can use it for food.

有些年份我会遇到物污损题， 比如海 squirt（一种海洋无脊椎动物）和其他东西会很早就附着上面，这真的会影响我是否能将其用于食用。

While birds nest among mangrove branches, fish lay eggs amidst their sprawling, complex root systems. Symbiotic sponges and sea squirts protect their host trees from hungry woodboring crustaceans.

鸟儿红树林的树枝间筑巢，鱼儿则它们庞大而复杂的根系中产卵。共的海绵和海鞘保护它们的寄主树免受饥饿的钻木甲壳类动物的侵害。

I mean, since it might go back to john rady's little anecdote and spark, you know, the sea squirt, I guess swims around, then as soon as it does whatever it needs to do, it just dies when it stops moving.

我的意思是，这可能让人回想起约翰·拉迪的小轶事和灵感来源——海鞘，它游动着，一旦完成了它需要做的事情，当它停止移动时就会死去。