Beaked whales are the members of the family Ziphiidae which consists of 21 species. These toothed whales are notable for their elongated beaks. Beaked whales are some of the world’s most extreme divers. They can dive for long periods—20 to 30 minutes is common, and 85 minute dives have been recorded—and to great depths: 1,899 meters (6,230 ft) and possibly more.