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

如果你想要一个种差异好，就看看海鞘。

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，运动不再是生存必需，所以海鞘定居下来以后第一件事，就是把它自己大脑吃掉为身体提供能量。

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

骨架熊猫海鞘，种独特海鞘在2018年首次引起了一位研人员注意。

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

在其生命初期，海鞘长有一个神经系统。

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

官方名字是骨架熊猫海鞘，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，它就会吃掉自己大脑。

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

为了说明一点，Daniel 举了一个海鞘。

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.

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

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.

有些年份我会遇到生物污损问题， 比如海 squirt（一种海洋无脊椎动物）和其他东西会很早就附着在上面，真会影响我是否能将其用食用。

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

对那些在家上学朋友们，海鞘是些半透明管状生物， 看起来就像果冻袋一样。

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，一家生产可持续蛋白质来源北欧公司正在询问：“你愿意尝试用加工过海鞘制成汉堡吗？”