The world’s largest fish swim to the surface to warm up, after diving for extended periods at chilly depths of hundreds of meters.

A new study in Australia of four whale sharks, Rhincodon typus, has shown that the fish spend around 2.5 hours at the surface, on average, after making very deep, long day dives, in addition to the shorter, shallower “bounce” dives they make during the day and night.

“When we looked at our data, we found that the whale sharks spent regular intervals at the surface between diving bouts,” said study lead researcher Michele Thums at The University of Western Australia in a press release.

Read more in The Epoch Times