Like all mammals, beluga whales share certain characteristics, including having a backbone, being warm-blooded, breathing air through lungs, and having mammary glands that produce milk to nourish their young. Beluga whales are highly social animals known for their distinctive white color, which they acquire as they age, and their characteristic "melon" or rounded forehead used for echolocation.
Additionally, beluga whales are intelligent creatures with a complex social structure and intricate vocal communication systems. They inhabit Arctic waters and are considered to be among the most vocal marine mammals, using their unique vocalizations to communicate, hunt, and navigate their environment.
In summary, beluga whales are undeniably mammals, exhibiting all the fundamental traits that characterize this diverse and widespread group of animals.