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Images: Scuba Gear and Origami

In the 1970s Rioux trained to be a Navy hard-hat diver, which required a sealed copper helmet, lead boots, and more heavy gear. “The whole rig weighed about 190 lb on the surface,” he said. “Nowadays, a full generation hasn’t seen that equipment.” (Photo courtesy of Terry Rioux, Woods Hole Oceanographic Institution)

A Navy diver during the Vietnam war, Rioux worked for a few months in a program training dolphins to use their intelligence and sonar capabilities to locate enemy swimmers approaching docked ships. (Photo courtesy of Terry Rioux, Woods Hole Oceanographic Institution)

Diving Safety Officer Terry Rioux’s office overflows with material collected over the years—partly inherited from his predecessor—documenting scientific diving from its infancy in the late 1950s though the development of modern equipment and regulations, and including records of every logged scientific dive made by a WHOI diver. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

Rioux trains both new and experienced divers for scientific scuba diving and WHOI certification. Here, in a local pool, Rioux (right) conducts a class that includes Joint Program student Kelton McMahon (left), who now uses scuba diving to study coral reef fish and whale sharks in the Red Sea. (Photo by Margaret Rioux, Woods Hole Oceanographic Institution)

Maggie Rioux diving under the WHOI dock: “A scientific diver has to do, collect, or observe something, and it might not be in the best conditions,” Terry Rioux said. “People need to be trained to go into that environment, do their work, and come back safely. But we have a great area to train divers for many conditions.” For example, the average visibility under the WHOI dock is about 8 to 12 feet, and after storms, ”not so good—3 feet, 2 feet.” (Photo by Terry Rioux, Woods Hole Oceanographic Institution)