Oceans

A finless porpoise takes its name from a near-complete lack of which fin?

More Questions from Oceans
The abyssal zone begins at what depth?
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What is a cataract in a river?
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What does the Atlantic bluefin tuna eat at a young age?
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Which ocean's water is the coldest?
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What role does a skimmer play in cleaning up ocean pollution?
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Which ocean lies between Africa and Australia?
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What animal is a meat-eating, freshwater fish?
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Which fish known as danio rerio is commonly used in research?
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