Incredible! Why Don T Fish Have Eyelids
Not having an eyelid doesnt mean that the fish cant go to sleep. Instead insects are obliged to manually clean their eyes using their forelegs something you will often see. Pin On My Saves Most mammals have eyelids similar to ours but other types of animals dont need eyelids. Why don t fish have eyelids . I dont know WHY snakes have no eyelids but the lack of eyelids doesnt mean they arent as highly evolved as animals that do have eyelids. The simple answer is yes. But fish still sleep. Fish do not have eyelids and do not have reasons to shut or close their eyes. They dont have eyelids said fish physiology expert Richard Brill affiliate faculty at the Virginia Institute of Marine Science in Gloucester. But eyelids can serve other functions too. How Fish Sleep If They Dont Have Eyelids. So to achieve a streamlined contour which fish do need eyelids are eliminated from the. However the shark is the only species of fish that have a nictitating membrane which acts as