![]() To navigate underwater, hunt, avoiding predators and for communication both dolphins and porpoises use echolocation also known as bio-sonar. ![]() Dolphins can attain a swimming speed of about 18 miles per hour while for a short distance porpoises can swim with a speed of 34 miles per hour fastest among all cetaceans. Locomotion and Echolocation:ĭolphins and porpoises swim with their fins pectoral fins help them to steer underwater, dorsal fin provides them stability. Dolphins have longer noses, bigger mouths, more curved dorsal fins, and longer, leaner bodies than porpoises. They come to the surface and breathe air through the blowhole present on their back. Unlike other fishes, Dolphins and porpoises cannot breathe underwater as they don’t have gills. Porpoises are grey with a slightly blue undertone and are darker than dolphins. Dolphins are mainly grey coloured but their colour also varies from grey with black and white pattern or pink. The size of dolphin and porpoise also varies but generally, dolphins are larger. Their teeth also have different shapes, dolphin’s teeth are sharp and conical while the porpoise teeth are flat having a spade-like shape. Dolphin’s dorsal fin is curved and appears like a hook while the porpoise has a triangular dorsal fin. Both are warm-blooded marine mammals Dolphins have a long nose which appears like beak whereas porpoise is flat-faced having small snout. Anatomical Structure:Īt a glance dolphin and porpoise may look similar but one can identify these two by inspecting their head and dorsal fin. To decide the winner between dolphin and porpoise we need to know about them. Here an intriguing question arises, what would happen if they encounter each other or who will win if an animal duel occurs between them. Dolphins come from the Delphinidae family whereas porpoises belong to Phocoenidae family both have different anatomical structure and behavior. However, dolphin and porpoise are very different from each other. They are widely known due to their cute and cuddly look often people misattribute them as a similar creature as they bear a strong resemblance to each other. Dolphins and Porpoises belong to the Cetacean order of marine mammals.
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