National Geographic : 1968 Jan
Midnight on the ocean floor finds the marine world awake and active: Big-eyed scad hover above mating squid. Attracted by Deep Diver's 1,000-watt lamp, they pay no heed to pho tographers invading their do main off Great Stirrup Cay. "Fantastic sight," recalls ma rine biologist Richard Waller, who witnessed the mating and spawning of the squid. "We con firmed that females of Dory teuthis plei differ from other squid in laying their eggs," he reports. "They do not attach the egg clusters to hard objects on the bottom; instead, they dig tiny holes and plant one end of each egg strand." Waller and fellow scientist Robert Wicklund earlier spent 25 hours in Deep Diver, mostly at a depth of 120 feet, leaving the sub at will to observe and collect specimens. The craft, they believe, will speed man's march toward fuller under standing of the undersea world. ship at will in the longest lock-out dive-25 hours-ever made from a submarine, watching the little-known life of sea creatures (above and right). I peered with fishy curiosity through a port into the forward compartment, where a pilot and an observer sat sealed off at nor mal atmospheric pressure (diagram, page 142). They nodded a silent greeting. I solemnly shook the hand of a helmeted figure who emerged from the after-chamber. That evening the sub rested snugly in its cradle across Sea Diver's stern, her two divers still under pressure inside. At a con sole amidships, Dr. MacInnis controlled the slow return to their normal environment. I came back later to talk to him. Weariness shadowed his eyes, but his voice betrayed none as he checked his charges by intercom. "Keep moving around, guys. Don't lie too long in one position. How is it in there?" 144 .