A small dolphin of the cold offshore Southern Ocean, distributed around Antarctica. Its black-and-white flank pattern resembles an hourglass, though observations remain limited.
It is black above and white below, with white flank patches and a backward-curving dorsal fin.
Observations summarized by ADW describe small groups and a diet that includes fish, squid and crustaceans. Its behavior is still poorly known because records are scarce.
An extinction-risk assessment has not been added yet.