Weighing more than 15 tons, a sperm whale has a brain larger than any other animal on earth and is considered one of the more social whale species. Over the years, Patrick Dykstra has worked with the Massachusetts Institute of Technology to learn how whales communicate, how they perceive other creatures in the water, and how they behave in his immediate presence. With sensitivity and experience, he gets closer to whales than nearly anyone else, leading to once-in-a-lifetime experiences and personal bonds with specific whales.

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