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Alligators have a special eyelid that is a bit transparent, which allows them to see underwater
Alligators have very good eyesight and can see well both in and out of water. They have vertical-slit pupils that help them to see well in bright light, and they also have a reflective layer behind their retina that improves their night vision. Alligators can detect motion well, making them effective hunters.
Of course they are. All alligators are reptiles (not amphibians).
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Humans are the only animals killing American alligators, through hunting and habitat loss.
Adult American alligators have very few predators, but they do get eaten by black bears on rare occasions. A bigger alligator will occasionally eat the adult alligator. The youngs get preyed on by big fish, wading birds, monitor lizards, and water snakes.
Alligators are amphibious animals and need to spend time in the water.
Black bears don't eat american alligators.
Alligators will eat other alligators on occasion. A mother alligator will generally watch over her brood for a while, once they're in the water, but eventually her instincts tell her it's time to leave. After that...any small animal in the water is potentially food, even her young.
They have 3 sets of eyelids to help them see under water without hurting their eyes. They also have a flap in their throat so they can open their mouth under water and eat food without getting water in their throat. Last, they have flaps on their nostrils that help them go under water and not get water in their nose.
They have a clear eyelid, or nicitated membrane, that can cover their eye when they submerge their heads. They can use it while out of the water as well.
No. Alligators live in fresh water, sharks live in salt water.