Mysticeti include the largest animals ever known to exist on Earth. The blue whale is the largest living creature, reaching up to 180,000 kg — 20 times the weight of a humpback whale and 10 times the largest sperm whale. The fin whale follows at 120,000 kg. At the other extreme, the minke whale weighs only 9,000 kg, making it the smallest of the great baleen whales. The size diversity in this group reflects adaptations to different feeding strategies and oceanic habitats.
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