SPECIAL SHIELD: The red-eyed tree frog has a see-through eyelid with a striped pattern. The lid protects the frog’s eyes underwater and keeps them moist on land in Central America.
Photograph by Thomas Marent, Minden Pictures
WE SHELL SEE: The thorny oyster has dozens of eyes around the edge of its shells. These peepers likely help the creature detect movement and light changes from multiple angles, warning the oyster of nearby predators.
Photograph by Chris Newbert, Minden Pictures
SPIDEY SENSE: The regal jumping spider’s eight eyes extend around the sides of its head, allowing the spider to have an almost 360-degree view of its surroundings as it hunts for prey.
Photograph by Alex Hyde, NPL, Minden Pictures
NO NIGHT-LIGHT NEEDED: Cuttlefish see better in the dark. In bright light its pupil becomes shaped like a W, which helps the animal reduce the amount of light that enters its eye.
Photograph by Dave Fleetham, Getty Images
NOW YOU SEE ME: When the pupil of Australia’s northern spiny tail gecko contracts—or shrinks—to form a black slit, its patterned iris becomes visible. Some scientists think the iris' pattern—similar to the skin's—is less likely to attract predators.
Photograph by Michael and Patricia Fogden, Minden Pictures
BEST LOOKOUT EVER: The peacock mantis shrimp’s eyes can see in two different directions at once. They can also detect colors that humans aren’t able to see.
Photograph by Wolfgang Poelzer, Getty Images
RED ALERT: During the summer breeding season, black-necked grebes grow gold feathers around their bright red eyes, which might help attract mates.
Photograph by Lesley van Loo, NiS, Minden Pictures
FIVE EYES: A dragonfly’s two large eyes (like the red ones here) bulge out from the sides of its head, helping it see flying insects. Between the big eyes, a row of three smaller eyes helps the dragonfly know which direction it’s flying.
Photograph by Paul Souders, Getty Images
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Shrimp Packs A Powerful Punch - Ep. 3
The peacock mantis shrimp is a fearsome creature known for its … sucker punch? Find out what else makes the peacock mantis shrimp so freaky in this episode of “Freaky Creatures!”