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Asked by anon-39421 to Emma on 20 Oct 2022.
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Emma Govan answered on 20 Oct 2022:
It depends on how you measure it! The blue whale eats the most (around 16 tonnes of krill per day) but that’s not a lot compared to the size of its body (the blue whale weighs around 200 tonnes). Hummingbirds are much smaller, but their hearts beat so fast that they eat up to 3 times their body weight per day in nectar! That would be equivalent, sugar-wise, toa human being drinking 1,163 cans of cola a day!
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