What is a physiological adaptation of a crocodile?

Crocodiles, the world's largest reptiles, have been around for 240 million years. During that time, they have developed many adaptations that enable them to live in their watery homes. SkinCrocodiles have special cells, sometimes called integumentary sense organs, distributed throughout their skin.

The function of these cells is not completely understood, but they may help the animal locate prey and detect changes in the salinity level of water. MouthIn addition to their very sharp teeth, crocodiles have a fleshy extension at the back of their tongues that covers the opening to their throats and prevents water from entering when the animal is submerged. Internal OrgansCrocodiles can hold air in their lungs to float in water, and they can make tiny adjustments in the amount of air to change their position in the water.

EyesAll crocodiles also have a second eyelid, called a nictitating membrane, which is used to both clean the eye and to protect it when the animal is submerged. Limbs and ... more.

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