Underwater images captured by an autonomous ocean camera showed a huge, never-before-seen reptilian creature gliding silently through the abyss: its head resembled that of a giant iguana, with eyes adapted to eternal darkness. Its body was sleek but armored, with limbs clearly evolved for hunting in the depths of the ocean. It circled the camera once and then disappeared into the darkness. Scientists are baffled: It is too large to be a known marine lizard. Too deep to be a Komodo dragon, which

Deep tow camera: eyes on the deep sea