ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Commercial diver using a spanner to adjust nuts and bolts that are holding together an underwater structure. Cables from the surface are supplying electrical power for the lights, and allowing communication with the surface. The diver is using a helmet connected to an air supply on his back. The mouthpiece is seen below the viewing plate in the helmet. Bubbles from the air supply are seen rising behind the diver. Photographed at the National Institute of Professional Diving (INPP), Marseilles, France.
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