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Porpoises are small, intelligent marine mammals belonging to the family Phocoenidae within the order Cetacea. They are characterized by their robust, spade-shaped bodies, which typically measure between four and six feet in length, and their short, blunt beaks. Porpoises are found in oceans worldwide, particularly in colder waters, and are known for their agile, playful behavior at the surface of the water. They feed primarily on fish and squid, using echolocation to navigate and locate prey. Porpoises are also highly social animals, often traveling in groups and communicating with a variety of clicks and whistles. Despite their many fascinating characteristics, porpoises remain relatively unknown compared to their larger cousins, the dolphins.