According to scientists , animal eyes evolved about 540 million years ago as simple light-detecting organs. Today, vision is the most important sense for many animals, including humans, and it has become incredibly diverse and complex.
Here are some animals with weird eyes:
Stalk-eyed flies
These strange little creatures are found mainly in the rainforests of Southeast Asia, Africa, and to a lesser extent in Europe and North America. They get their name from the long projections that protrude from the sides of their heads, with eyes and antennae at the ends. Male flies tend to have much longer eye stalks than females, and biologists have determined that females prefer males with long eye stalks. During mating season, males often stand face to face and compare the length of their eyestalks. The one with the furthest "eye span" is recognized as the winner. Male flies also have the extraordinary ability to enlarge their eyestalks by swallowing air through their mouths and blowing it through ducts into the tips of their eyestalks. They do this mainly during mating season. Photo: Genk |
Devil Face Spider
The goblin spider has six eyes, but it looks like it only has two because the middle pair is much larger than the others. This is an adaptation for its nocturnal lifestyle. Goblin spiders are blessed with excellent night vision, not only because of their large eyes, but also because of a layer of extremely light-sensitive cells covering them. |
Spookfish
Spookfish are deep-water fish that live at depths of about 1000-2000 meters and are known for their strangely shaped eyes. Each eye has a bulge called a “diverticulum” that is separated from the main eye by a septum. The main part of the eye has a lens that functions like a normal eye, while the "diverticulum" has a curved mirror that allows light to be reflected to a focal point on the retina, helping the fish to observe objects below them. This fish has a diet mainly of small crustaceans and plankton for a size of only 18cm in length. Photo Vietnamet |
Mantis shrimp (mantis shrimp)
Many consider the mantis shrimp to be the animal with the most bizarre and surprising eyes in the world . Mantis shrimps are not actually shrimps, but a different type of crustacean from the order Stomatopoda. Known for their aggressiveness and formidable weapons (mantis shrimps have extremely sharp, powerful claws that can cut a human finger in half or even shatter a glass aquarium with a single strike), these creatures are voracious predators that live mainly in tropical waters. Photo VPAS |
Leaf-tailed gecko
Leaf-tailed geckos have surreal-looking eyes, with vertical eyes and a series of “pinholes” that widen at night, allowing them to take in as much light as possible. These eyes also have more light-sensitive cells than human eyes, giving leaf-tailed geckos the ability to detect objects and see colors at night. Pixels |
Chameleon
Their upper and lower eyelids are fused together and cover almost the entire eyeball, leaving only a small opening for humans to see through. Each eye can move completely independently of the other, so chameleons can track prey and watch for potential threats at the same time. This also means chameleons have a full 360-degree field of vision. Chameleons have very sharp eyesight. They can observe an insect several meters away. Chameleons can see ultraviolet light. Photo: Tinhte |
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