Family
Ziphiidae (Beaked whales)
Ziphius cavirostris. Photo: (c) Giacomo Gola, some rights reserved (CC BY-NC)
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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