Oceans

What instrument uses sound waves to help get a picture of the ocean's bottom?

More Questions from Oceans
What is the largest animal in the ocean?
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Which of these states is closest to the Pacific Ocean?
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How many collapsible lifeboats did the Titanic carry?
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What is a large body of salt water, usually connected to an ocean?
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The major disturbing force in the open ocean is what?
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Which ocean forms the entire western border of Chile?
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What does the beluga whales name mean in Russian?
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What ocean is on Peru's western shore?
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