WEBVTT 1 00:00:02.729 --> 00:00:03.528 It’s a jellyfish. 2 00:00:04.811 --> 00:00:07.137 And what you’re looking at is kind of on its side. 3 00:00:07.393 --> 00:00:14.940 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. 4 00:00:15.693 --> 00:00:18.191 And the way they swim is by squeezing that bell. 5 00:00:18.474 --> 00:00:25.954 But they have the tentacles oriented on the upper side to intercept whatever it is that they encounter as they move. 6 00:00:26.295 --> 00:00:30.954 And you can see the motion of that bell structure, there some cool, actually, bio pneumatic it’s called, 7 00:00:31.221 --> 00:00:34.628 robotic modeling where people have built robots that swim like jellyfish 8 00:00:34.961 --> 00:00:37.560 because it’s actually a very effective way to move through the water. 9 00:00:37.954 --> 00:00:44.344 Absolutely. It’s a form of jet propulsion. You’re taking in some water and then squeezing it out through a smaller opening, 10 00:00:44.823 --> 00:00:47.095 which is what gives you the propulsion to move in the opposite direction.