Yaël, let's discuss a creature small and mighty.

Have you heard of the pistol shrimp?

Now there's a ferocious animal, known for its claws: one is a normal pincer.

The other is an enormous snapper — that's the pistol.

Because when this snapper snaps, bullets made of bubbles shoot towards prey.

But now that I think about it, I'm not sure where those bubbles come from.

Let's look at the science of the snapper.

Half the claw is immobile, and it has a socket.

The other part of the claw is called the dactyl, and it's like a plunger that desperately wants to punch into that socket.

The dactyl is the center of great tension, as muscles pull it backward and forward at the same time.