Family
Ziphiidae (Beaked whales)
Ziphius cavirostris. Photo: (c) alicia penney, some rights reserved (CC BY)
Beaked whales are the members of the family Ziphiidae, which consists of 22 species. These toothed whales are notable for their elongated beaks. Among air-breathing animals, beaked whales are some of the most extreme divers: Cuvier’s beaked whales regularly dive for an hour at a depth over 1,000 m (3,300 ft), and the longest and deepest foraging dive recorded is 137.5 minutes at 2,992 m (9,816 ft). This is the greatest dive-depth known for a mammal.
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