Hourglass dolphins use echolocation for orientation and prey location. A recent study showed they produce clicks that allow them to detect prey at more than twice the distance of other dolphin species.
Feeding on lanternfish, squid, and crustaceans, hourglass dolphins have been spotted feeding in groups of seabirds and plankton swarms. They have conical teeth: 26 - 34 in their upper jaws and 27 - 35 in their lower jaws.