© Edwin Giesbers
© Alex Shepack
© ED’s_Fly_Meat_Inc
© Ron Holt
Habitat: Colombia, Costa Rica, Nicaragua, and Panama
Status: Least Concern
My what strange eyes you have… all the better to HYPNOTIZE ME WITH?!! This Ghost Glass Frog, (Centrolene ilex) is veryyy suspicious with those marbled swirling peepers. I mean, there must be a reason to have such captivating eyes, other than just attracting mates and what not.

photo: Joel Sartore, National Geographic
Maybe they’re there to distract you from seeing inside its body. It is a glass frog, after all, which means that they are relatively transparent. I would be a little self conscious if everyone could look right inside to see what I had for lunch that day, too. However, the frogs are apparently able to vary their the intensity of its green coloration to match the substrate (typically a leaf) on which it is resting (source). That’s where the ‘ghost’ portion of their name comes from – they’re such master camouflagers that it’s like they’re invisible!
The only thing that really stands out are those crazy eyes… which are quite impressive.