yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

How Fish Eat Part 2 (SLOW MOTION UNDERWATER!) - Smarter Every Day 119


3m read
·Nov 3, 2024

Hey, it's me Destin, welcome back to Smarter Every Day.

So in the last episode of Smarter Every Day, we revealed that fish eat by sucking in the water by opening up their mouth, and then once they do that, they allow the water to exit back behind the operculum by opening up their gill flaps. It's really cool.

But the problem was we only captured the footage above water. So Dr. Seymour and Richard Fitzpatrick at James Cook University have gone back, and they made a rig so they could do it underwater. So let's go check it out.

  • So we're gonna do the barramundi high-speed feeding sequence again for you, but this time from underwater. What we've done is we've modified this camera housing; we've put the Phantom camera inside there. Jamie's gonna use his stick with a prawn, but no hooks, so we're not damaging the fish at all, and we shall see how they look at high speed from underwater.

Yep, a little bit closer to you. Ooh! Got it!

  • Looked good.

  • So let's have a look. (Destin) Alright, here we go. Watch the water flow through the mouth and out the gills.

But why doesn't the water flow in through the gills? If you watch closely, it's because the flap overlaps and it slams shut like a check valve, only allowing flow in one direction.

(Jamie) That is awesome!

  • OK, we hope you like that one, Destin. That demonstrates everything, but underwater. Bye from Australia. Ciao!

  • See ya, buddy!

OK, the next thing we're gonna look at is the fact that fish can throw their lips forward. Now this helps them close the gap with their prey. There's two more clips that Richard sent to us that we're gonna look at.

The first one is the stone fish, which you know is the most venomous fish in the world. It closes its gap really, really fast with its lips; it's amazing.

The second one is called the slingjaw wrasse. Now this one is just unreal. It's like a mechanical hinge structure; I'll let you see it. But everything is in slow motion. Check it out.

So the stonefish just chills out, looking like, well, a stone, until the prey gets within its strike radius. Then this happens. This is a slingjaw wrasse. Prepare your brain for what you're about to see.

Yeah. That's crazy. Let's watch it again from the side, and you can see, if you look close, the shadow of that little fish as it zips up through the sling jaw.

OK, I hope you enjoyed learning how fish eat along with me. Thank you to Richard Fitzpatrick and Jamie Seymour for giving us this footage.

If you want to see more awesome stuff that they do on the Great Barrier Reef and their Phantom footage underwater, it's amazing, go check out biopixel. They have stock footage that they make; just go look at it, it's amazing stuff.

Also, if you want to check out more stuff like this fishing trip, you can follow me on @SmarterEveryDay at Instagram. I've been taking pictures of water striders and stuff like that.

Anyway, I'm Destin, I hope we earned your subscription today. You're getting Smarter Every Day. Have a good one, and go check out biopixel. Take it easy.

More Articles

View All
Gordon Ramsay Learns to Spearfish | Gordon Ramsay: Uncharted
Spear fishing in Hawaii, I’m like a fish out of water. Thank God I’ve got free diving champ Kimi for a guide. She makes it look so easy. [Music] Damn, she’s good. [Music] Despite my fetching camouflage, I can’t hit a thing. Don’t get frustrated! Oh man, …
Pregnancy 101 | National Geographic
(elegant piano music) [Narrator] The product of millions of years of evolution, the human body is capable of many remarkable things, but none of which may be quite so incredible as the development of life in utero. (calm music) Over three million babie…
Estimating multi-digit multiplication word problems | Grade 5 (TX TEKS) | Khan Academy
We’re told results from a survey showed that 2,138 people took photos with the camera when on vacation. About 15 times as many people took photos with their phone. About how many people took photos with their phone? So pause this video and take a shot at …
From 2005: Four young internet entrepreneurs
One way to increase your net worth is to use the internet for all it’s worth. Everywhere you look, computer savvy people are doing just that, many of them astonishingly young. Our cover story is reported now by David Pogue of the New York Times. Remember…
How did Russia begin? | 1450 - Present | AP US History | Khan Academy
What we’re going to talk about in this video are the origins of the Russian people, and in particular, we’re going to talk about the eastern Slavs, whom not just modern Russians, but also Ukrainians and Belarusians view as their ancestors. So, let’s thin…
Opening a bank account | Banking | Financial Literacy | Khan Academy
So let’s think about what’s involved when you decide to open up a bank account. Well, the first step is where you want to open it and what type of account you want to open. So your choice of bank might depend on things like the interest that they might g…