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One interesting fact about dolphins is that they use many unique ways to communicate with one another. They also use high-frequency clicking sounds to investigate their surroundings. More »

www.reference.com Pets & Animals Mammals Marine Mammals

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

Some interesting facts about dolphins are that they belong to the order Cetacea, are mammals that can live in either saltwater or freshwater environments, depending on the species, and have very good hearing and vision. ... More »

www.reference.com Pets & Animals Mammals Marine Mammals
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The Delphinidae family contains 36 species of dolphins, including killer whales. Dolphins travel in groups called pods and use echolocation to navigate the ocean. They communicate with one another using distinct whistles... More »

www.reference.com Pets & Animals Mammals Marine Mammals

Sharks and dolphins are alike in many ways, sharing several physical characteristics such as their side fins, dorsal fins and torpedo-shaped bodies. Although these animals vary wildly – one is cold-blooded and one is war... More »

www.reference.com Pets & Animals Mammals Marine Mammals

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

Harp seals live off a diet of capelin, polar cod, herring, halibut, crabs and shrimp. Male harp seals mature by age eight, while females are mature by age six. Harp seals require ice for whelping, and their survival is t... More »

www.reference.com Pets & Animals Mammals Marine Mammals