Mammals

From whales and dolphins to seals and sea otters. Marine mammals are defined by their reliance on the ocean for food, along with mammalian characteristics such as hair and mammary glands. 

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A right whale breaches, lifting its huge body out of the water.

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North Atlantic Right Whale

Stretching up to 16.8 meters (55 feet) long and weighing up to 62 tons (70 tons), the North Atlantic right whale is one of...