Skip to main content

Up Next

Back to Show
Deep Look

Why Jellyfish Float Like a Butterfly—And Sting Like a Bee

Season 2 Episode 8

Jellyfish don’t have a heart, or blood, or even a brain. They’ve survived five mass extinctions. And you can find them in every ocean, from pole to pole. What’s their secret? Keeping it simple, but with a few dangerous tricks.

Support Provided By
Season
California Floater Mussels Take Fish For an Epic Joyride
4:46
The California floater mussel does a surprising amount of travel - for a bivalve.
Walking Sticks Stop, Drop and Clone to Survive
3:50
Indian walking sticks are more than just twig impersonators.
This Dangerous Mosquito Lays Her Armored Eggs – in Your House
4:20
The Aedes aegypti mosquito makes a meal of us around our homes.
A Flea's Fantastic Jump Takes More Than Muscle
4:32
These little "itch hikers" make an amazing leap 100 times faster than the blink of an eye.
Kangaroo Rats Are Furry, Spring-Loaded Ninjas
4:06
Kangaroo rats have exceptional hearing and powerful hind legs.
You Wish You Had Mites Like This Hissing Cockroach
3:40
Not all roaches are filthy.
A Tsetse Fly Births One Enormous Milk-Fed Baby
4:55
Mammalian moms, you're not alone!
Why Crickets Just Won't Shut Up
4:06
They're not playing their song with the body part you're thinking.
The Curious Webspinner Insect Knits a Cozy Home
4:39
Female webspinners shoot super-fine silk from their front feet.
Tarantulas Take Hooking Up To The Next Level
3:56
Every fall, male tarantulas leave home for good with one thing on their minds: sex.
This Killer Fungus Turns Flies into Zombies
4:28
Something is growing inside that fruit fly in your kitchen.
These Giant Leaf Insects Will Sway Your Heart
4:21
Giant Malaysian leaf insects stay very still on their host plants to avoid predators.
Active loading indicator