Our three-day voyage had delivered us to the approximate center of the Sargasso. Clumps of golden brown seaweed mixed with black tar balls washed gently against our boat, staining its gleaming white hull a chewing tobacco brown as we waited for sunset, our first scheduled dive.

Were there dragons waiting for me in the depths? Ancient mariners once swore as much. The Sargasso was considered treacherous, filled with sea serpents and killer weeds that could entwine a ship's keel and drag it under. Superstition? No doubt, but as in all legend, there runs a vein of truth. Embellishments of eye-witnessed accounts become lore over time, and the myth surrounding the Sargasso was no different.

The real danger lies in the sea's unusual weather. The area is almost devoid of wind, and many a sailor who once entered these waters in tall sailing ships never found their way out.

As our vessel was steel, powered by twin diesel engines and a 465- horsepower bow thruster, I had little reason to worry.

Ah, how the seeds of cockiness blossom when soiled in ignorance.

While fate's clouds gathered ominously on my horizon, all my metallic-blue eyes perceived were fair skies. Still young at twenty-five, I had already earned a bachelor's and master's degree from Princeton and a doctorate from the University of California at San Deigo, and three of my papers on cetacean communication had recently been published in Nature and Science. I had been invited to sit on the boards of several prominent oceanographic councils, and, while teaching at Florida Atlantic University, I had invented an underwater acoustics device—a device responsible for this very voyage of discovery, accompanied by a film crew shooting a documentary sponsored by none other than National Geographic Explorer.

By society's definition, I was a success, always planning my work, working my plan, my career the only life I ever wanted. Was I happy? Admittedly, my emotional barometer may have been a bit off-kilter. I was pursuing my dreams, and that made me happy, yet it always seemed like there was a dark cloud hanging over head. My fiancée, Lisa, a "sunny" undergrad at FAU, claimed I had a "restless soul," attributing my demeanor to being too tightly wound.

"Loosen up, Zack. You think way too much, it's why you get so many migraines. Cut loose once in a while, get high on life instead of always analyzing it. All this left-brain thinking is a turnoff"

I tried "turning off," but found myself too much of a control freak to let myself go.