My crocodile shoes are crying too
The crocodilian has three eyelids. The top and bottom lids are the normal, opaque eyelids found on most reptiles and mammals. A third, transparent eyelid moves sideways across the eye. This eyelid protects the otherwise ‘open’ eyes when the crocodilian submerges and attacks under water.
Although nobody is quite sure how well the crocodile can see underwater, the transparent membrane which covers the eye during diving ensures that light can reach the eye if the water is clear enough to see. It is possible that the membrane itself alters the refractive index of light entering the eye to possibly improve vision underwater slightly.
{ Crocodile: Evolution’s Greatest Survivor by Lynne Kelly | Continue reading | Video shows an Australian saltwater crocodile opening its eye }
