Oceans

What is the funnel-shaped opening beneath an octopus's head that secretes a black fluid when threatened?

More Questions from Oceans
A manatee is also known to be called what?
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An estuary connects the ocean to a what?
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Mar del Plata is an Argentine city on the coast of what ocean?
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Which ocean lies south of Afghanistan?
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Which of these is another word for the study of the ocean?
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What is a large body of salt water, usually connected to an ocean?
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How many eggs does a grey nurse shark carry when pregnant?
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What does the Atlantic bluefin tuna eat at a young age?
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