How tough are baby sea turtles? Scientists recently tested the endurance of hatchlings using mini treadmills and special swimsuits—all in the name of science.

In the wild, the newborn reptiles use the bright, low horizon of the ocean to navigate away from the beach and into open waters within 24 hours of hatching.

But light pollution seems to disorient these tiny night crawlers, making them spend more time on land—and thus rendering them more vulnerable to threats. Instead of scooting to the sea within a few minutes, disoriented turtles can sometimes wander on land for hours. (See how artificial lights obstruct the night sky.)

So a pair of researchers from Florida Atlantic University decided to investigate if all this