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Deep Look
Here’s How That Annoying Fly Dodges Your Swatter
Season 7
Episode 20
A fly has a pair of tiny, dumbbell-shaped limbs called halteres that were once a second pair of wings. They wield them to make razor-sharp turns and land out of reach on your ceiling. But don't despair – there *is* a trick to smacking these infuriating insects.

5:03
The drama is real for this sultry flower, a gorgeous butterfly and an unlucky fungus gnat.

3:56
Scorpions are notorious predators, but they also have delicate sensory organs.

4:52
The hydra, named after a mythical multiheaded monster, may be the secret to eternal youth.

4:25
This fly’s larvae tunnel inside greens like arugula and kale, leaving squiggly marks.

4:15
Each seed is home to a head-banging moth larva, trying to survive the Sonoran Desert sun.

5:01
Female aphids are matriarchs of a successful family operation — taking over your garden.

4:36
Firebrats and silverfish are pretty darn similar to some of the earliest insects on Earth.

4:11
After sunset, tiny crustaceans called beach hoppers emerge from sandy underground burrows.

4:12
Two tiny mites duke it out on strawberry plants throughout California.

4:00
California oak moth caterpillars eat all the leaves on an oak. Will the tree survive?

4:14
These sea slugs may look lazy, but eelgrass sea hares are actually environmental heroes.

4:33
They may look cute and colorful, but starfish are actually voracious predators.