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Dolphins: about 10 feet (3 meters) long, taller, pointed dorsal fin, more social, live about 50 years, Both Dolphins AND Porpoises: breathe air, mammals, live in pods, warm-blooded, use echolocation, Porpoises: about 7 feet (2 meters) long, shorter, rounder dorsal fin, more shy, live less than 15 years,

Dolphins & Porpoises Compare and Contrast

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