Oceans

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

More Questions from Oceans
Which underwater machine helps humans travel around beneath the surface of the ocean?
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What covers the skin of a cuttlefish and allows it to change its color to blend in with its surroundings?
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A manatee is also known to be called what?
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Where does the female marine catfish lay her eggs?
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What ocean did the Pilgrims sail across to reach North America?
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Which of the following is a major predator of sea otters?
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What 300+ island Pacific archipelago was formed entirely from volcanoes?
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Into which ocean does the Zambezi River flow?
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