They can only run up … Still, alligators do work in teams. The resulting 5 million individual recordings from the reptiles yielded some surprising findings: “We have had some beautiful results that show that a small increase in water temperature has a huge impact on the crocodiles’ ability to hold their breath underwater,” says Franklin. Nile crocodiles are common across much of Africa. In times of extreme stress, extended dives can be employed by the crocodile. Females are much smaller, growing to be about 10 feet (3 m) long and weighing 330 pounds (150 kg). 2 Answers. Originally Answered: If a crocodile can stay under water for almost a hour and a human can barely manage two minutes, then apart from lung size what is the cause of this? The behaviour of beavers means that they need to be able to remain underwater for several minutes at a time. This allows a large gator to stay underwater … These animals with thick and very durable skin seem to us an insensitive creature. During cold weather they may stay under for 10-12 hours, some reports of up to 24 hours. Adult saltwater crocodiles have 66 teeth on average and the greatest bite pressure of any animal in the world. Adult male alligators tend to lead solitary lives, they spend most of their time hunting and hanging out alone. This, in combination with their amazing blood, enables them to stay underwater for a long, long time. Both crocodiles and alligators cannot necessarily “breathe underwater” rather they breathe air just like us human beings do. Alligators are not equipped with gills, so they don't breathe under the water. Crocodiles use these mechanisms not only when under water, but also while resting or for periods after heavy feeding. Crocodiles can stay under water for up to two hours at a time, and the larger ones can go up to a year without eating. How Long Can Nile Crocodiles Stay Underwater? Answer Save. less than 20min usually but they can float for up to 2 hours if they aren't struggling. The longest time an alligator has been known to hold its breath varies from 30 minutes to 2 hours. Crocodiles range in size from African dwarf crocodiles that measure rarely over 5 feet (1.5 m) to saltwater crocodiles which can approach 23 feet (7 m). A highly evolved circulatory system means crocodiles can stay underwater from more than an hour. Typically when an alligator goes underwater it does so by submerging itself in the water or sinking to the bottom of the water. There are special bony flaps in the throat which allow a crocodile to eat when submerged or breathe when its jaws are open underwater. On warm days they can probably stay under water for about an hour, 15-20 minutes is typical. Red-Eyed Crocodile Skink Habitat . The alligator's body is specially developed to stay beneath the water if the circumstances call for it. 4. 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