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Dolphins are very smart and playful animals. Although they live in the water, dolphins are mammals just like humans and need air to breathe, which they do out of a blowhole on the top of their heads. In fact, dolphins ca... More »

www.reference.com Pets & Animals Marine Life

Bottlenose dolphins are well-known stars of aquarium shows. Although they're typically shallow divers, they can dive down to 850 feet or so below the ocean's surface and they can also stay underwater for up to 15 minutes... More »

www.reference.com Pets & Animals Mammals Marine Mammals

Baby dolphins, or calves, are born after gestation periods of up to 12 months in the mother's womb. Calves begin swimming in the mother's womb as early as 9 weeks into the pregnancy. When baby dolphins are born, they com... More »

www.reference.com Pets & Animals Marine Life
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In spite of the bottlenose dolphin's gentle appearance, All About Wildlife explains that these animals are in fact apex predators. While great white sharks, tiger sharks and bull sharks occasionally prey on young dolphin... More »

www.reference.com Pets & Animals Marine Life

Dolphins have great vision, although they can only see limited colors. They live in the water, but they do not drink from it. Instead, they get any necessary moisture from the food they eat. More »

www.reference.com Pets & Animals Marine Life

Evolutionary biologists believe that dolphins emerged 20 to 25 million years ago during the early Miocene period. Modern species may trace to kentriodontids, which are small-toothed whales believed to have the echolocati... More »

www.reference.com Pets & Animals Marine Life

Some dolphins migrate seasonally to warmer water, but other dolphin pods will remain within a home base without migrating. Scientists differentiate between coastal dolphins and off-shore dolphins. Coastal dolphins are mo... More »

www.reference.com Pets & Animals Marine Life