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Whales: The Sea's Mysterious Giants

Photography by Flip Nicklin/Minden Pictures, from Among Giants | Captions by Della Watson

An orca breaches in Johnstone Strait, British Columbia, Canada. No one knows why whales leap into the air. Breaching could serve a social function, or the force of their huge bodies smacking against the water's surface might help whales dislodge parasites, barnacles, and dead skin.

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