It’s a jellyfish.
And what you’re looking at is kind of on its side.
And the tentacles, instead of trailing behind it, the mouth of this thing would be on the left side, inside of that bell that you see squeezing.
And the way they swim is by squeezing that bell.
But they have the tentacles oriented on the upper side to intercept whatever it is that they encounter as they move.
And you can see the motion of that bell structure, there some cool, actually, bio pneumatic it’s called,
robotic modeling where people have built robots that swim like jellyfish
because it’s actually a very effective way to move through the water.
Absolutely. It’s a form of jet propulsion. You’re taking in some water and then squeezing it out through a smaller opening,
which is what gives you the propulsion to move in the opposite direction.