A rare species of dolphins........7 to 8 lines
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Dolphin is a common name of aquatic mammals within the infraorder Cetacea. The term dolphin usually refers to the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), and Pontoporiidae (the brackish dolphins), and the extinct Lipotidae (baiji or Chinese river dolphin). There are 40 extant species named as dolphines
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Dolphins have conical teeth, a defined beak, a pronounced bulbous forehead, a more streamlined body, and a curved dorsal fin while porpoises have spade-shaped teeth, a rounded head and triangular dorsal fins. They are also generally smaller than dolphins.
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