Flamingoes are strange and ungainly creatures, but their hooked bills make much more sense when you see them eating underwater. The birds are filter feeders, and they suck water, mud, and silt in through the front of their bills and pump it back out the sides. In between hairy structures called lamellae help them separate algae, brine shrimp and other food from the mix. Be sure to turn the sound up on the video so that you can hear the sound of flamingoes at work. (Image and video credit: San Diego Zoo; via Colossal)