Beaked whale

A toothed whale in the family Ziphiidae, typically marked by a beaklike snout and adaptations for deep diving. Most species are rarely seen at sea.

Deep diving: A diving strategy in which animals descend far below the surface to forage or avoid threats. Beaked whales routinely dive to depths of hundreds or thousands of metres.
Ziphiidae: The family of toothed whales commonly known as beaked whales. This family name identifies the group that defines the concept.
Baird's beaked whale: A large beaked whale found in the North Pacific. Its size and northern range contrast with many smaller, more widely distributed relatives.
Marine bioacoustics: The study of sound production, transmission, and hearing in marine organisms. Passive acoustic recordings detect beaked whales that visual surveys often miss.
Sonar-induced cetacean strandings: Mass strandings of cetaceans associated with certain naval sonar activities. Beaked whales are especially associated with some sonar-linked mass stranding events.
Echolocation: Biological sonar that uses emitted sounds and returning echoes to detect objects. Beaked whales use clicks to locate prey in dark, deep water.
Cetacea: The mammalian order comprising whales, dolphins, and porpoises. Beaked whales are one branch of this fully aquatic mammal group.
Northern bottlenose whale: A North Atlantic beaked whale with a bulbous forehead and prominent beak. Its distinctive head shape demonstrates that beaked whales do not all look alike.
Satellite tagging: The use of satellite-linked tags to track an animal's movements and behavior. Tags have documented dive depths and movements that are otherwise difficult to observe.
Anthropogenic noise: Sound produced by human activities that alters natural acoustic environments. Shipping, seismic surveys, and military sonar can affect the soundscape beaked whales inhabit.

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