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A blue whale can consume 500000 calories in a single gulp. The mouth of an adult blue whale opens to almost 10 feet (3 Metre) wide,
allowing it to take in significant amounts of food in a single swallow.
Ribbed structures on a blue whale's upper jaw can trap small sea animals,
which the blue whale then swallows for sustenance. The amount of food that
can be trapped when a blue whale takes a gulp of water is as much as 1,102
pounds (500 kgs), providing the whale with about 500,000 calories.
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