A large white whale found in Arctic waters, known for its rounded head and complex vocalizations, or a type of caviar from a large sturgeon.
From Russian 'belyy' (white), altered by European languages. The whale was named for its white color, and the caviar was named after the sturgeon species (also white-colored fish).
Beluga whales are so talkative and expressive that they're called 'canaries of the sea,' and they actually smile-like expressions that humans find charming—though the expression isn't related to emotion!
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