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Está adaptada completamente para a vida no Ártico e para isso, tem uma série de características anatômicas e fisiológicas que a diferenciam dos outros cetáceos.
Seu tamanho é um intermédio entre as baleias e golfinhos, com um comprimento e peso máximos para os machos de 5,5 metros e 1600 kg e um corpo robusto com o maior percentual de gordura entre os cetáceos.Their round heads have a small beak, and their necks are narrower than other whales. They can live in water that beluga whales live in can be as cold as 32 degrees Fahrenheit (0 degrees Celsius).Unlike other whales, their neck vertebrae are not fused, allowing them to move their heads up and down and from side to side, according to the American Cetacean Society. When the ocean starts to freeze, many migrate south to slightly warmer waters, according to National Geographic. Groups are called pods, which may have hundreds to thousands of whales, according to the Animal Diversity Web (ADW).Scientists are unsure of how long beluga whales live. Others believe they live 60 to 70 years based on how many teeth they lose per year, according to the NOAA.Here is the classification of beluga whales, according to the Integrated Taxonomic Information System (ITIS): Kingdom: Animalia Subkingdom: Bilateria Infrakingdom: Deuterostomia Phylum: Chordata Subphylum: Vertebrata Infraphylum: Gnathostomata Superclass: Tetrapoda Class: Mammalia Subclass: Theria Infraclass: Eutheria Order: Cetacea Suborder: Odontoceti (toothed whales) Family: Monodontidae (white whales) Genus: According to the International Union for Conservation of Nature's Red List of Threatened Species, beluga whales are listed as near threatened.