Animal science-the world's top ten most peculiar animal eyes, even the immortal mode ~

Although humans generally only study their own vision and eyesight, but some animals ' eyes and human working principle is completely different, so these animals to see things in a way that is not human. Here are some of the animals you may be very familiar with, but their eyes, there may be many that you do not understand ...

Squid is the most evolved animal in the animal eye. Their pupils are strangely W-shaped, unable to recognize color, but can see the polarization of light, even in dim light, to see the contrast. Humans can focus better by changing the shape of the lens, but the squid can change the shape of the entire eye. In addition, the animals ' internal sensors allow them to simultaneously observe what is in front of their bodies.

This kind of dog that chilling cold (2) Cool (B) min (dai) Sharp (Meng) eyes, is in the uninhabited prairie life is essential. The eyes are almond-shaped, with a moderate spacing and a slight tilt, which is usually ice-blue, navy, amber, or brown. Some dogs may have brown eyes, while the other eye is blue or a combination of two striking colours.

Frogs are known for their big eyes, but few people know why their eyes protrude outward. Under water, they protrude their eyes outward to observe movement on the surface. When they close their eyes, they shrink their eyes and cover them with opaque eyelids and two lids of translucent films.

The square pupil of the goat attracts a lot of attention, but it's not just to make them look good. The width of the pupil gives the goat a 330-degree view, compared with a mere 185-degree view of humans. Is this the immortal mode of Naruto?

Like most insects, butterflies have a pair of compound eyes, which are made up of hundreds of tiny hexagonal lenses, so they can see all directions at the same time. Although this vision can not be sharp focus, but the butterfly can see ultraviolet light, this light human eye is not visible. This feature helps guide them to find flowers that have delicious nectar.

The Chameleon's eyes are the most unique. They have no upper or lower eyelids, but they have a conical structure with a small opening that fits their pupils in size. Each conical structure can rotate alone, so the chameleon can actually look at two separate objects in a completely different direction at the same time. This visual advantage makes them particularly adept at capturing flying insects.

Hippos can see things underwater, and the accuracy is amazing, but their eyes are really interesting, the hippo's eyes have a layer of transparent film to protect the eyes, to prevent them from being cut by underwater debris.

Alligators are ancient animals called "living fossils". Nevertheless, the crocodile still has highly evolved eyes. The crocodile's eye position is unique, and even if the entire head is underwater, the eye can still protrude from the water. The animal's eyes have excellent night vision, as a mirror-like structure behind the eyes helps to reflect the light that is not absorbed by the eye.

Night-infested geckos must be able to block bright sunlight during the day and have excellent eyesight at night, which is why they have long, zigzag pupils, which, through contraction, allow only a certain amount of light to enter the eye. Interestingly, humans cannot see color in the dim moonlight, but geckos can. In distinguishing color, Gecko's ability is nearly 350 times times stronger than human.

Like many predators, the owl's eyes are in front of the face, which gives them great depth perception during hunting, especially in dim light. Interestingly, these big eyes are fixed in the owl's eye sockets and cannot rotate at all. That's why the animals keep turning their heads.