Oceans

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

More Questions from Oceans
What beach in the Cook Islands is famous for its scuba diving, fishing, and snorkeling spots?
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Mid-ocean ridge means what as it relates to the environment?
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A whale's "forelimbs" are known as what?
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Which of these is considered the world's smallest fish?
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What type of sea creature is an Orca?
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Coral reefs can only survive between which of these temperatures in degrees Celsius?
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What percentage of our oxygen supply is generated in the ocean?
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Which of the following whales is nicknamed the 'Squid Hound' because of its diet and how it hunts its prey?
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