A comprehensive pocket guide to the marine mammals, seabirds, fish, invertebrates and other marine life of the Northwestern Atlantic. Built for the field, full-color illustrations, range maps and descriptions are integrated on opposite pages for easy reference. The range maps cover the Atlantic coast from Cape Hatteras to Newfoundland. Many of the individual whale species get two full pages. With an outstanding overview of oceanography and conservation, checklist and glossary.  (NAM24, $19.95)