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The largest animal currently alive, as well as the largest animal to ever exist, is the blue whale. The maximum recorded weight was 190 tonnes (209 short tons) for a specimen measuring 27.6 m, whereas longer ones, up to 33.6 m, have been recorded but not weighed. It is estimated that this individual could have a mass of 250 tonnes or more. The longest non-colonial animal is the lion's mane jellyfish

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