by Laura Marsh (Author)

Over the course of their 70-year lifespan, sperm whales will easily travel the circumference of the Earth in search of food and the need to breed and find a mate. Males will travel as far north as the Bering Sea and as far south as Antarctica in order to find enough food to sustain their ways of live--up to 700 squid a day! Along the way, these massive beasts battle 30-feet-long giant squids, and each other, to sustain their ways of life.

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Author Biography

LAURA MARSH is a long time contributor to National Geographic Children Books. She has written a large number of books in National Geographic Readers series and also in Mama Mirabelle and Toot and Puddle series.