Nature worked hard to achieve that

Transparent Wings This species of Nymphalidae butterflies is widespread in the Amazon rainforests. The tissue between veins on the butt...

Transparent Wings

This species of Nymphalidae butterflies is widespread in the Amazon rainforests. The tissue between veins on the butterfly’s wings is transparent due to the lack of pigmented scales.

An Ideal Spy

A Devoted Hunter Knows No Limits

So Clear

Source: http://brightside.me/