Biofluorescence is a phenomenon in which creatures—plant or animal—absorb light at a certain wavelength and release or emit it at a different wavelength. The light from the animal becomes a different color from the light that was absorbed.

In 2020, ICR’s Dr. Jeff Tomkins discussed biofluorescence in the platypus, of all animals.

Apparently, evolution (and natural selection) can do almost anything:

An allegedly vital piece of animal evolution was first discovered in 1984 in Scotland. Conventional scientists suggested the fossil of Westlothiana lizziae, a lizard-like reptile, is an example of an early stem tetrapod.