Who that saw the movie Jaws can forget the blood thirsty shark lurching onto the boat deck at the ship’s captain? Shark Week was earlier this summer, celebrating one of the earth’s oldest mammals. Here are some interesting facts from “The Secret of a Shark’s Eyes”, a video by the Smithsonian Institute:
A Great White shark’s eyes are about five times the size of the human eye but the shark eye structures are almost identical to the human eye.
A Great White shark has the ability to see light, movement, color, contrast and detail.
Sharks have eyelids but don’t blink. They use water to cleanse their eyes.
The tapetum lucidum, a reflective layer of the retina, doubles the intensity of light entering the eye, allowing sharks to see well in dim illumination.
I remember examining my golden retriever’s eyes many years ago
and seeing the tapetum lucidum, the brightly colored bluish-green reflection from Ginger’s retina.