Scientists studied the fossilized teeth of megalodon and determined that the jumbo-size extinct species of shark was warm-blooded.
Megalodon, a mega-size species of extinct shark that prowled the world's oceans between 23 million and 3.6 million years ago, was likely warm-blooded and had a body temperature that was significantly higher than that of modern-day sharks, new research suggests.
Like many shark species, including great whites , megalodon is classified in the new research as being"regionally endothermic," meaning that it can maintain its body heat even when its external environment is much cooler. The study found that the average body temperature of the megalodon was approximately 80 degrees Fahrenheit , whereas modern-day sharks with regional endothermy have an average body temperature between 72 F to 80 F , according to the study."Warm-bloodedness is advantageous because it allows an animal to have a more active lifestyle, such as being able to sustain long-distance swimming or fast swimming," Shimada said.
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