While it may not be the most well-known ocean predator, the bobbit worm surely ranks among its slyest. In this clip, the ruthless worm extends its long body as it springs off the ocean floor, vying to gobble up a crab with its scissors-like mouth. Jason Jue was on a night dive in Lembeh Strait, Indonesia, when he captured this astonishing underwater footage of the battle of wills. Credit: Jason Jue