Beluga whale

The beluga whale (Delphinapterus leucas) is a small Arctic toothed whale that turns white as it matures and produces a wide range of sounds.

Monodontidae: The whale family comprising belugas and narwhals. Belugas and narwhals are the only living members of this family.
Beluga vocalization: The varied whistles, clicks, and calls produced by beluga whales. Their diverse sounds support communication and acoustic sensing.
Arctic marine ecosystem: The interacting organisms and physical environments of seas in the Arctic region. Belugas feed within Arctic marine food webs and are prey for some predators.
Cook Inlet beluga whale: A genetically distinct beluga population confined to Alaska's Cook Inlet. This isolated population is endangered and faces risks from human activity.
Toothed whale: A cetacean in the parvorder Odontoceti, which uses teeth and echolocation to find prey. Belugas belong to this group and use echolocation underwater.
Whale song: A patterned sequence of vocal sounds produced by some whales, often repeated over time. Belugas produce complex calls, though their vocal repertoire is not typically called song.
Marine bioacoustics: The study of sound production, transmission, and reception in marine environments. Beluga calls help researchers study animal behavior and underwater soundscapes.
St. Lawrence beluga: A beluga population inhabiting the St. Lawrence Estuary and Gulf in eastern Canada. Its southern range and persistent contaminant exposure make it a closely studied population.
Melon (cetacean): A fatty organ in the foreheads of toothed whales that helps focus sound during echolocation. The beluga's prominent, flexible melon helps shape its outgoing clicks.
Sound localization: The process of determining a sound source's direction or position from acoustic cues. Acoustic perception helps belugas track sounds in dark or murky water.

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