Still puzzled, Gamay said, “Okay, we've just tossed a fancy bottle over the side and hauled it up filled with seawater.”

“Thank you for making my point. Look around at this ship. The Benjamin Franklin is loaded with cutting-edge research gear. We've got stuff like specialized echo sounders, multibeam and side-scan sonar and the latest in computer hardware and software. But we're no different from the ancient mariners who smeared wax on their sounding lead to check out the composition of the ocean bottom.”

Gamay smiled. “And now we're about to collect plankton using an old-fashioned fisherman's net. I draw the line when it comes to transport. No rowboat. How's the Zodiac coming?”

“Ready to go,” Trout said. He read the surface of the sea with an experienced eye. “Wind's freshening. Could get choppy. We'll have to stay sharp.” He pronounced it “shaap,” betraying his New England roots.

Gamay glanced at the whitecaps starting to dot the grayish blue water. “We might not be able to go out again for days if we wait.”

“My thoughts exactly.” He handed her the Van Dorn sampler. “I'll meet you at the Zodiac davit.”

Gamay delivered the sampler to the wet lab. The water sample would be analyzed for trace metals and organisms. She went to her cabin, pulled a hooded, foul-weather suit on over her jeans, Icelandic wool sweater and chamois shirt, and tucked her long, dark red hair under a multicolored “Friends of the Hunley” baseball cap. Slipping into her personal flotation device, she went out to the stern deck.

Trout was waiting next to the davits that held the twenty-three-foot-long, rigid inflatable boat. He was dressed impeccably as usual. Under a full suit of yellow commercial-grade, foul-weather gear, he wore designer jeans specially tailored to fit his six-foot-eight frame and a navy sweater made of cashmere wool. One of the colorful bow ties to which Trout was addicted adorned the button-down collar of his Brooks Brothers oxford-weave blue shirt. As a counterpoint to his casual elegance, he wore scuffed work boots, a holdover from his days at the Woods Hole Oceanographic Institution, where functional footwear was de rigueur. He wore a navy wool cap to protect his head.

The Trouts climbed aboard the rigid inflatable boat and the Zodiac was lowered into the sea. Paul started the Volvo Penta diesel inboard/outboard engine as Gamay cast off the tether line. They stood side by side at the steering console with legs braced in a charioteer's pose, knees bent to absorb the shock of the flat-bottomed hull slapping the waves.

The rugged inflatable craft planed over the seas like a playful dolphin. Trout steered toward a Day-Glo orange sphere that was bobbing in the water about a quarter mile from the ship. They had set the buoy earlier in the day to provide a reference point for the phytoplankton survey.