how animals eyes can see , and best beautyfuls eyes in animal world .

 Each of the photos below depicts a situation as seen by a person

Dog vision

 Whereas human eyes have three types of color-detecting cells known as cones, dogs only have two. Their cone cells are trained to detect yellow and blue-to-ultraviolet light.

Each cone type has a pigment that is sensitive to different wavelengths of light. The spectrum of colors that an animal perceives is determined by a combination of color-sensitive pigments in their eyes and brain processing.

Dogs can't discern as many colors as we can since they have fewer cone kinds.

Gecko vision

 In low light, humans cannot perceive colors very well, if at all. This is due to the fact that our cone cells work best in rather strong light.

Other cells in our eyes, known as rod cells, assist us in seeing in low light. However, because rod cells only contain a single light-sensitive pigment, humans perceive in greyscale at night.

Geckos, on the other hand, have exceptional night vision, which is helpful for a nocturnal hunter. At night, their eyes have evolved to be up to 350 times more sensitive to color than ours.

 

 

Garden snail vision

Although garden snails' eyes cannot concentrate or perceive color, they may just about make out another snail passing by or a predator approaching.

The snail's capacity to distinguish between different levels of light aids it in navigating towards dark areas.

Giant clam vision

Adult huge clams are absolutely immobile because they have fastened themselves to rocks or coral. They see the world through hundreds of tiny pinhole eyes that run along the edge of their delicate bodies.

Pinhole eyes feature a tiny entrance and the form of a deep cup, but no lens. They are just one of several eyes held by molluscs, which include slugs, snails, oysters, and octopuses, and show diverse stages in eye evolution.

Despite the fact that huge clams are sensitive to three different colors of light, they are unable to synthesize the information, resulting in colorful but ambiguous visuals. However, their eyes can sense adjacent movement, allowing the clams to take advantage of it.

Jumping spider vision

 

These spiders hunt thanks to their four pairs of eyes' excellent eyesight. They pounce when they locate possible prey.

Their largest set of eyes are forward-facing and provide the spider with high-resolution vision. The smaller eyes are employed for peripheral vision and motion detection.

Jumping spiders can perceive a wider range of colors than humans. They even have pigments that are sensitive to UV light, so they can see more details in the petals of this flower than humans can.

Leaf-tailed geckos

 The marbled eyes of leaf-tailed geckos are beautiful. According to the Smithsonian's National Zoo and Conservation Biology Institute, they often have a gold, silver, or brown backdrop with concentric striations around the pupil.

Geckos use a brief lick of the tongue to clean their gem-like eyes, which are either lidless or covered by clear eyelids.

 

Jumping spider

Most spiders have poor vision despite having eight eyes. That is why they use webs to catch prey. However, the jumping spider (Phidippus audax) is in a class of its own among spiders: it possesses great vision, which allows it to identify prey that it can confront.

With its eight eyes, the jumping spider can view nearly 360 degrees around itself. It sees detail with its huge, main eyes on the front of its skull and motion with its tiny, secondary eyes.

Dragonflies

 

Because of the huge lenses in their compound eyes, dragonflies have excellent eyesight. Even better, these insects can distinguish between a wide range of hues.

Humans have trichromatic vision, which refers to the red, blue, and green light-sensitive proteins found in our eyes. Dragonflies, on the other hand, can perceive a far wider range of colors, including ultraviolet light.

Cuttlefish

 When the cuttlefish (Sepia officinalis) is exposed to intense light, its pupil changes shape to a W. However, when the cuttlefish is in dim or dark water, its pupils turn round. What causes this to happen?

 

Crocodiles

 

 

 The crocodile, like the cat, is an ambush predator with vertical-slit pupils that assist it judge distance while attacking prey. Another thing the two creatures have in common is that they both have night vision.

Behind the crocodile's retinas is a layer of shiny, mirrored crystals. During the day, a pigment in these crystals functions as sunglasses. At night, however, the pigment cells retract, enabling the crystals to reflect light back onto the retina, enhancing the image's power. This enables the crocodile to see in the dark.