Produced by Stephen Hutcheson and the Online Distributed Proofreading Team at http://www.pgdp.net [Illustration: NATIONAL PARK SERVICE] WHALE PRIMER _With Special Attention to_ THE CALIFORNIA GRAY WHALE _by Theodore J. Walker_ Published by the Cabrillo Historical Association 1962 [Illustration: National Park Service, Department of the Interior] Produced in cooperation with the National Park Service Copyright© Cabrillo Historical Association 1962 Second Printing 1965 Third Printing 1967 Fourth Printing 1969 Contents INTRODUCTION 1 TWO GENERAL MIGRATION ROUTES 2 WHALE WATERS—SUMMER AND WINTER 5 FEEDING—FILTER WHALES 6 EVOLUTION OF WHALES 10 Breathing Adaptations 10 Swimming Adaptations 11 WHALE TYPES 15 Porpoises and Dolphins 15 Squid Eaters 18 Filter Whales 18 SIGNIFICANCE OF BLUBBER 19 Heat Conservation 19 Buoyancy 20 Food Storage 20 SEXUAL MATURITY 21 LIFE SPAN 21 WHALE INTELLIGENCE 23 WHALE SENSES 23 Sight 23 Hearing 23 Smell 24 HABITS 24 ENEMIES 25 Killer Whales 25