Man first emerged from the depths of sea as a fish with fins-turned-shortened limbs that over several hundred million years evolved into land-based legs. From these humble ancestral origins emerged bipedalism, and in the blink of a cosmic eye, humans have gone from Stone Age hunters and gatherers to rulers of the planet. As part of the BBC series called the Human Planet, this video focused on a deep-sea hunter of fish. Filmed underwater in Bajau (southern Philippines), a local fisherman by the name of Sulbin free dives 20 meters to the sea floor to spear a fish. In fact, he’s actually seen striding across the sea bottom, “as if he’s hunting on land,” in the words of the narrator. The pressure of the water makes his body negatively buoyant at that lung-crushing depth.