7 Creatures Caught on Camera in the Mariana Trench That Shouldn't Exist

James Cameron reached the bottom of the Mariana Trench and called it "deader than the moon" — a flat, empty desert nearly 11 kilometers down. But over the next decade, cameras lowered into that same darkness kept catching things moving in it. Animals that, by the known rules of biology, shouldn't be able to survive down there at all. In this video we count down 7 real creatures caught on camera in the deepest place on Earth — from sea cucumbers that swim and a jellyfish so strange people called it a hoax, to the deepest octopus ever recorded, a scavenger the length of your arm, a ghostly see-through fish living at the absolute chemical limit of life, and a single cell the size of your hand quietly hoarding radioactive metal. Every one of them is real. Every one was filmed. And they're only the handful we happened to catch. 🌊 Subscribe for more from the deep — there's a whole world down there in the dark we've barely started to look at.