The giant undersea Bobbit worm looks kind a cute, with his rainbow coloured body, but he is anything but. When he’s on the prowl, he buries his up to 3m long body in the sand of the ocean floor, leaving only his head and antennas sticking out, and ever so patiently waits for a fish to come along. When it does, he snatches it with lightning speed and then bites down on it. If the fish is instantly killed, he's lucky, if not he gets dragged into the worms burrow and nobody has ever seen what happens there.