This Indonesian underwater hunter has trained his body to do something incredibly unmammalian: he can spend extended periods of time deep into the sea without any fancy scuba equipment. In this clip from a BBC Human Planet episode, Sulbin the hunter swims down 20 meters—just over 65 feet—below the surface to search for fish on the sea floor. He withstands the ridiculous water pressure and lack of air for two-and-a-half minutes, until he catches a fish. According to the clip, he can hunt at even deeper sea levels and for up to five minutes. Jeez. Way to make me feel crappy about my pathetic existence, Indonesian Underwater Hunter.