Sometimes I think fishing is my life. I love doing it. Over the past six years, during which my wife, Lisa, and I have been cruising the western Caribbean aboard Sand Dollar, our Polaris 43, I've gone out almost every day with my speargun, and I've managed to keep a steady supply of seafood on the table. Our favorites are schoolmaster snapper, yellowtail, bar jacks, dog snapper, and even barracuda. In this region, luckily, we've never heard about any cases of ciguatera, the food poisoning caused by the accumulation of toxins in the flesh of normally edible tropical fish.