UV, n.All

Goldfish can see both infrared and ultraviolet light

Bats can see ultraviolet light

Beards can block up to 95% of the sun’s harmful UV rays.

DNA is a fragile molecule given to damage --- About a thousand times a day, transcription errors or ultraviolet light results in mutations that can result in any number of genetic diseases such as cancer or Alzheimer's

Birds not only can see in Ultraviolet, their feathers also have patterns which can only be seen in UV.

Humans have the ability to see ultraviolet light but it's passively filtered through the lens of the eye (which can be removed).

Reindeer are the only mammals that can see ultraviolet light, allowing them to easily tell the difference between white fur and snow because white fur has much higher contrast.