With index entries of "abdominal pain" and "seizure," one quickly infers from this swimmers' nightmare guide that the sea presents many insidious protagonists other than the behemoth of Jaws fame (though you may regret eating the liver of some sharks). The author presents a menagerie of marine creatures diverse in their species, distribution, and biochemical and other modus operandi which actually evolved to be more defensive than offensive. B&w illustrations show what to avoid; includes welcome treatment notes; glossary. Paper edition (unseen), $19.95. Annotation c. by Book News, Inc., Portland, Or.