"Eat a lot while you still can," our guide said, shrugging casually. "We were going to buy more fish for tomorrow in that last village, but they didn't have any. So we're out.""Who do we kill for food first?" one man joked. "The American?" We all laughed. No discussion necessary: As the only American on the trip, I was outnumbered. Obviously I'd be the first to go.So I cracked open another beer, resigned myself to my fate and gazed at the distant green islands in the mesmerizingly blue South China Sea that surrounded me. If I was about to be cannibalized by a horde of hungry tourists, this would be a pretty spectacular place to go.