The Leatherback Sea Turtle may look a bit average, but unlike other species, they have been known to dive down as far as 4,200 feet (or 1.3 kilometers) towards the seabed, slowing their heart rate in the process.
At these depths, turtles are ill-equipped to hunt effectively, so why do they go there? According to researchers, this behavior is rooted in instinctual reconnaissance.
In the evening, jellyfish float closer to the surface for hunting, but these depths are where jellyfish go to hide from the heat of the day. Leatherback turtles dive down to learn where, in the wild expanse of sea, they can expect their dinner to emerge.