ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Diver propulsion vehicle (DPV). This torpedo- shaped device allows a diver to explore a far greater area than would be possible if unaided. It can travel at up to 15 kilometres per hour, and allows the diver to travel against currents that would halt a swimming diver. Photographed in the Maldives.
Model release not available. Property release not required.