The eyes are beautiful. And this applies not only to people, but also animals. True, the eyes of animals, in addition to the amazing appearance, also have cool abilities. Therefore, such unusual pupils are not just a quirk of nature, but a well-thought-out plan. So let's take a look at eyes of these animals and find out why they have such an interesting shape.
catfish
Pupils in the form of a crescent are possessed not only by catfish. This form can also be found at the stingray and flounder. Such pupils allow reduce water distortion and increase contrast. Such features help fish better navigate in space, in a timely manner notice prey and enemies.
Octopus
Rectangular oblong pupils increase the field of view octopus up to 340 degrees, allowing him to easily notice approaching danger. A similar gift of nature can also boast goats and mongooses.
Gecko
Some varieties of geckos are owners vertical pupils with wavy edges. They allow reptiles get super sharp images, making them amazing at night hunters.
Cuttlefish
Nature rewarded cuttlefish with W-shaped pupils. In the dark they become almost round. However, with enough light take such an unusual shape, allowing the rays to penetrate into the pupil with different directions. Thanks to this feature, cuttlefish can see good for long distances.
four-eyed
This fish sees perfectly above and below water, and all thanks to its amazing curved lens. Each part of the eye has its focal length, giving the fish essentially double vision.
Frog
Frogs and toads have horizontal pupils, allowing them to better notice the vertical movements of predators. They can also become incredibly wide, which is very useful during night feedings.
Crocodile
Vertical slit pupils let in more light, allowing you to hunt better at any time, including at night.
Stingray sea fox
The pupil of the sea fox has outgrowths that are part of the echolocation apparatus.
Long-snouted whipweed
This snake has the sharpest binocular vision, and all thanks to unusual, horizontally elongated pupils that allow precise determine the distance.
Toucan
From nature, toucans received a wide pupil and excellent stereoscopic vision. Thanks to these pupils, birds are able to see even the smallest details.