Skinks have transparent eyelids that let them see even when their eyes are closed. This evolutionary feature enables these animals to see while burrowing and eating insects underneath the surface.
Skinks
Chameleons can see with their eyes closed because of a small hole in the center of their eyelid.
Chameleons
Snakes don't have eyelids in the first place. Their eyes are covered by transparent scales. In effect, their eyes are always closed, and yet they can see fine.
Snake
Oriental Bay Owl's huge black eyes also have white lids with slits that allow them to literally see with their eyes closed.
Oriental Bay Owl
Camels have three eyelids, including a translucent nictitating membrane that covers the eye completely. This membrane helps keep out sand and dust, and can even improve vision.
Camel
Octopus skin contains light-sensitive pigment and chromatophores, which are distributed throughout their skin. This means that an octopus can “see” or detect light with its skin, even when blindfolded.
Octopus
Platypus can't technically see with its eyes shut, but it does close its eyes while on the hunt. While diving a groove on each side of their head containing their eyes and ears closes shut.