Over at Smarter Every Day, Destin has a new video, this time about how fish eat, which involves some pretty awesome physics. Instead of accelerating their entire body to close the distance to prey, fish thrust their jaws forward. As they do, they open their mouth, expanding the volume there and lowering the pressure. This causes water to flow into their mouth, pulling the prey with it. But the water has momentum, which would push the fish backward. To prevent this, the fish then opens its gills, allowing the water to rush back out while trapping the prey in its mouth. Be sure to check out Destin’s video so that you can see the process in high-speed. (Video credit: Smarter Every Day)
WHOOOOOOOOOA!! That is some awesome footage.
That’s not the only cool way that fish eat. Did you know that the moray eel has a second set of jaws that it uses to snag prey, just like the creature in Alien? Read more about the moraylien here.
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