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Correction for the weight of a Blue Whale

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How heavy is 456 carats?
It's about 0.0000009 times as heavy as a Blue Whale
The weight of a Blue Whale is about 509,000,000 carats.
(Balaenoptera musculus)
Blue whales weigh between 509,000,000 carats. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 4.870 carats each.
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