02:55
Deep Look
Why Jellyfish Float Like a Butterfly—And Sting Like a Bee
Jellyfish don't have a heart, or blood, or even a brain.
Nature's Scuba Divers: How Beetles Breathe Underwater
See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
Nature's Scuba Divers: How Beetles Breathe Underwater
Season 2 Episode 11 | 2m 53s | CC
Bugs and beetles can't hold their breath underwater like we do. But some aquatic insects can spend their whole adult lives underwater. How do they do it? Meet nature's Scuba divers. They carry their air with them—in some cases, for a lifetime.
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