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Terrifying sea monster 'hafgufa' described in medieval Norse manuscripts is actually a whale | Live Science
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Multimedia Gallery - The Kraken Supercomputer is named after the enormous mythical sea monsters. | NSF - National Science Foundation
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Sea monsters and their inspiration: serpents, mermaids, the kraken and more | Natural History Museum
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File:Theodor Kittelsen - The Sea Monster - NG.M.01984 - National Museum of Art, Architecture and Design.jpg - Wikipedia
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