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A bottlenose dolphin is a toothed cetacean of the genus Tursiops. These dolphins are studied for flexible foraging and social behavior as well as underwater acoustic sensing. Different populations can use different learned behaviors.

The lineage of whales, dolphins and porpoises. Its Eocene fossils document a sequence from terrestrial or amphibious relatives to fully aquatic forms; living members comprise Odontoceti and Mysticeti.

A dolphin is a member of several groups of toothed cetaceans. The common name includes oceanic and river-associated forms. Sound production and sensing are important in many species, but the name does not imply identical sensory or social behavior throughout the grouping.

The living toothed-whale lineage, including dolphins and porpoises. Specialized sound production and echolocation are important components of its sensory biology.