Oceans

Blue whales have an extremely loud call, approximately how loud measured in decibels?

More Questions from Oceans
All of Brazil's river systems drain into which ocean?
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The Arctic Ocean is in which direction from North America?
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What does a Nictitating membrane on a shark do?
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A group of fish swimming together is called what?
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Most shark species will do what when they stop moving?
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The hadal zone begins at what depth?
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Mauritania borders which ocean?
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Which of these is considered the world's smallest fish?
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