Includes bibliographical references (p. 32) and index.
Contents:
Humpback whales -- Migration map -- Wonderful whales -- Summer in the arctic -- The calving grounds -- A long swim -- Why migrate? -- Finding their way -- Hunting humpbacks -- New dangers.
Summary:
Explains how humpback whales live and grow; discusses their migration, its purpose, and its route; and lists threats humpback whales may face on their migration.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.