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Process in a dolphin echolocation: in green the sounds generated by the dolphin, in red from the fish. Idealized dolphin head showing the regions involved in sound production. This image was redrawn from Cranford (2000). Odontocetes produce rapid bursts of high-frequency clicks that are thought to be primarily for echolocation. Specialized ...
Whale vocalizations are the sounds made by whales to communicate. The word "song" is used in particular to describe the pattern of regular and predictable sounds made by some species of whales (notably the humpback and bowhead whales) in a way that is reminiscent of human singing. Humans produce sound by expelling air through the larynx.
Certain words in the English language represent animal sounds: the noises and vocalizations of particular animals, especially noises used by animals for communication. The words can be used as verbs or interjections in addition to nouns , and many of them are also specifically onomatopoeic .
The first ever 3D prints of images contained in dolphin echolocation sounds have been produced—including one of a human being seen from a dolphin's point of view.
The impact of underwater sound can be reduced by limiting the sound exposure received by an animal. The maximum sound exposure level recommended by Southall et al. [54] for cetaceans is 215 dB re 1 μPa 2 s for hearing damage. Maximum sound pressure level for behavioural effects is dependent on context (Southall et al. [54]).
In general, three different types of sounds are produced by dolphins (and many other toothed whales). These are echolocative click trains, burst pulses and tonal whistles. [38] Dusky dolphins produce all three sounds. [39]: 77 Their echolocation signals are quick and broadband, much like in other whistle-producing species.
Scientists trying to understand the hunting behaviors of bottlenose dolphins have come up with a unique solution: fit them with video cameras.
The melon is structurally part of the nasal apparatus and comprises most of the mass tissue between the blowhole and the tip of the snout. The function of the melon is not completely understood, but scientists believe it is a bioacoustic component, providing a means of focusing sounds used in echolocation and creating a similarity between characteristics of its tissue and the surrounding water ...
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