With its species-by-species listing of over 30 different sea mammals, this compilation of descriptive facts might have look-it-up convenience; but it is choppy in style and arrangement. Scattered midway, between the Gray Whale and the Florida Manatee, are advice on handling a stranded whale; a listing of whale products; and an entry--similar to those on the sea mammals--on the jojoba, a plant that yields oil and thus might spare the sperm whale. Earlier, another one-page section tells of porpoises caught in tuna nets. Otherwise, the book consists of spotty and graceless jottings on one sea mammal after another. A trip to the World Book yields more information and reading pleasure, and a run through McClung's Hunted Mammals of the Sea (1978), for somewhat older readers, results in infinitely more understanding.