You’ve probably seen all kinds of robots — some that look like cars, some that look like lots of metal and wires, and some that even look like people. This robot is called the SAUVIM robot, and it’s the first robot that’s designed to travel by itself underwater. It’s about the size of an SUV and can dive up to 4 miles beneath the ocean. Its computer brain can control an attached 150-pound robotic arm that can pick up objects on the sea floor — and someday, maybe even fix things like underwater pipes or other structures built beneath the ocean surface.