Zavala cast an appraising eye on the sphere. “I used technology that wasn’t available back in the thirties, but otherwise it’s the original Beebe-Barton design that set the record by diving 3,028 feet in 1934. The bathysphere was beautiful in its simplicity.”

“The sphere design seems so obvious to us now,” Kane said. “At first, William Beebe thought that a cylinder-shaped bell might work. He was chatting with his friend Teddy Roosevelt years before the actual dive and sketched his idea out on a napkin. Roosevelt disagreed and drew a circle instead, representing his preference for a globe-shaped bell. Later, when Beebe saw the Otis Barton design based on a sphere, he realized that was the only way to deal with the pressure at great depth.”

Zavala had heard the story before. “Beebe saw that the cylinder’s flat ends would cave in,” he picked up the story, “but a sphere would distribute the pressure more evenly around its entire surface.” He squatted next to the globe and ran his hand over the thick skids that the legs rested upon. “I’ve added emergency flotation bags in the runners. There’s more than a little self-preservation involved, Doc. I’ll be making the dive with you.”

Kane rubbed his palms together like a hungry man savoring a juicy steak. “This is a dream come true,” he said. “I pulled every string I could to get on the dive list. William Beebe is responsible for my career in marine microbiology. When I was a kid, I read about the glowing, deep-ocean fish that he found. I wanted to share Beebe’s adventures.”

“My biggest adventure has been trying to stuff myself through that fourteen-inch door,” Austin said. “Try it on for size, Doc.”

Kane, who was about five foot eight, hung his jacket on the bathysphere’s frame, then poured himself headfirst into the sphere, doubled his body with the skill of a contortionist, and poked his head out the circular opening.

“It’s roomier in here than it appears from the outside.”

“The original bathysphere was four feet nine inches in diameter, and had walls one and a half inches thick made of fine-grade, open-hearth steel,” Zavala said. “The divers shared their space with oxygen tanks, filter trays, a searchlight, and telephone wires. We’ve cheated a little. The portholes are polymer instead of fused quartz. The tether is Kevlar rather than steel, and we’ve replaced the copper communications link with photo-optic fiber. We miniaturized the bulkier instruments. I would have preferred a titanium sphere, but the costs were higher.”

Kane easily exited the sphere and stared at it with near reverence. “You’ve done an amazing job, Joe. Beebe and Barton were aware they were risking their lives, but their boyish enthusiasm overcame their fears.”

“That enthusiasm must have rubbed off on you to come all this distance,” Austin said. “I understand you were in the Pacific Ocean.”