Remi pulled away a little so she could look into his eyes. “Don’t get me wrong. I love the ocean, and I love you. And who wouldn’t like to travel around on a state-of-the-art yacht, going from one gorgeous spot to another?”

“But?”

“But we’ve been away for a long time.”

“Maybe you’re right. We’ve accomplished more than we set out to do, and maybe it’s time to go home, get our house finished, and start on a new project.”

Remi shook her head. “I didn’t mean right this minute. We’re heading for Baja already, and we’ll reach land at San Ignacio Lagoon. I’ve always wanted to see where the gray whales go to mate and calf.”

“Maybe after that we can keep going straight to Acapulco and get on a plane.”

“Maybe,” she said. “Let’s talk about it then.”

After another day, they anchored in San Ignacio Lagoon, then launched the plastic ocean kayaks. Remi and Sam climbed down into them, George Morales tossed their two-bladed paddles down, and they glided into the lagoon. It wasn’t long before the first of the gray whales rose to the surface before them, spouted water and steamy spray from double blowholes, and then made a rolling dive downward, its tail working to leave a roiling, bubbly trail on the surface. They were silent for a few seconds—an animal the size of a city bus had risen in front of them and sunk again, leaving their little, orange plastic kayaks alone on the lagoon.

The Fargos spent the rest of that day and the following out in their kayaks. Whenever they met a gray whale, it would come close to them, apparently curious. Sam and Remi petted each whale on its head and back and then watched it go.

In the evening, the Fargos would sit at the table on the rear deck of the yacht with the crew and share a dinner of fresh-caught fish or Mexican delicacies brought from a restaurant in the small town of San Ignacio. They would stay out until long after dark, talking about the sea and its creatures, about their lives and their friends and families, as the night sky filled with brightening stars. After Sam and Remi retired to their cabin to sleep, they could sometimes still hear the sound of the whales spouting in the darkness.

Next, they moved south along the coast, making for Acapulco. On arrival, they called Selma Wondrash, their chief researcher. They had given her and the young couple who worked under her, Pete Jeffcoat and Wendy Corden, the month off, but Selma had insisted on staying in La Jolla and supervising the construction while they were away.

Selma answered, “Hi, Remi. Zoltán is just fine.”

“It’s both of us,” said Sam. “Glad to hear that. And how’s the construction going?”

“Just remember, the cathedral at Chartres took a few hundred years to build.”