"white whale" の定義と意味

What is a "white whale"?

White whales are small to medium-sized toothed whales known for their striking appearance, with pure white or pale gray skin that lacks the typical dark coloration seen in other whale species. They have a distinctive round head and flexible neck that allows them to turn and tilt their heads in various directions. Beluga whales are highly social animals known for their vocalizations, often called "songs" or "calls." They inhabit Arctic and sub-Arctic regions, and their unique appearance and behavior make them popular subjects of research, conservation efforts, and public fascination.