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There is a good chance they were because they can't breathe underwater

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Q: Were whales really land animals at one time?
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Do dolphins have hip bones?

Yes! They are vestigial (not serving a purpose biologically), and are remnant from a time when early early ancestors of whales were land based animals.


Whales have developed gills or lungs?

Whales have lungs. They descended from land animals with lungs. They had lungs before they became creatures living full time in the ocean. They did not develop either gills or lungs after they became sea creatures but long before.


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It is not known what time of the day blue whales sleep. The blue whale is one of the largest and heaviest animals in the world.


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Except for a few seconds when leaping into the air, whales spend ALL of their time in the water. They cannot move on land.


What lives longer a clams or whales?

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What do Japanese use whales for?

they usually use them to make traditional medicines and they often eat the whales blubber


Did whales walk the land?

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How do animals evolve to marine animals if their ancestors were land animals?

well over time the land animals change a little and they need to be underwater to live unlike their land animal ancestors


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What evidence is there that whales have formed from land mammals?

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Why does a whale have a pelvis bone even though its not used?

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