Nurse sharks also eat lobsters, along with octopuses. you will see the gills moving on this one -- nurse sharks can lay still on the bottom in the sand like this one, unlike other sharks that have to swim through the water to breath. their eyes are frequently white, because they have a protective "nictitating membrane"...which many sharks have, but in my experience, the nurse sharks eyes frequently appear white. this one is five feet in length, which is larger than most i see, but they hit nine feet or greater in length.