How do you eat if you don't have any teeth? Combine an independently moving jaw with a delicate, refined use of the principles of fluid dynamics and you've got a perfect hunting mechanism.
If you're like me, you haven't spent all that much time thinking about how fish eat, but it's pretty incredible. The super slow-motion video is captivating itself, but once Destin of Smarter Every Day explains what's happening, prepare to be blown away.
Next time you feed your goldfish at home, watch it eat - it uses the same process to snatch up those multi-colored flakes. You'll never look at fish the same way again.