This is unquestionably the most authoritative compact guide to the world of underwater animals that are poisonous, venomous, and electric. Stories concerning dangerous marine organisms are legion. While these hair-raising tales may be useful in holding an audience spell-bound, when a diver at a depth of 100 feet or a swimmer on a home beach suddenly comes upon, or is surrounded by, any of these organisms, he or she is more concerned with fact than fantasy.Dr. Bruce Halstead's book describes and fully illustrates these dangerous marine animals, their noxious effects, treatment of ailments resulting from them and, most importantly, how to avoid them.The illustrations, most of which are in full color, show the animals in their true forms and in their natural habitats.