Oceans

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

More Questions from Oceans
What is a tropical cyclone formed in the Pacific Ocean called?
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Blue whales have an extremely loud call, approximately how loud measured in decibels?
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The Titanic was how many feet from keel to bridge?
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What did Balboa originally name the Pacific Ocean?
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If you cook with fish, onions, potatoes and sour cream, what type of food might you be cooking?
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What ocean lies between Asia and North and South America?
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What is the name of a humpback whale in the South Pacific Ocean that was tracked online by Greenpeace?
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In which ocean would one find the Sargasso Sea?
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