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The Orca is the largest member of the dolphin family. Dolphins and porpoises belong to the order cetecea, sub-order odonteceti, or 'toothed whales'. There are 33 species of marine dolphins and 4 species of river dolphins. They range in size from the massive Orca to the tiny Buffeo, a river dolphin from the Amazon basin are of South America. Dolphins are characterized by conical teeth, 'beaks', and a streamlined appearance, among other things.

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14y ago

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