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Wednesday, January 16, 2008

Is it true that mammals that lived on the earth migrated to the sea?


Is it true that mammals that lived on the earth migrated to the sea?

It is true that a few mammals that once lived on land returned to the sea. Some went back to the sea in search of food. Others fled into the sea to escape their enemies. Some of their names like sea otter, sea cow or sea lion are names of animals found on land, with the word “sea” added, to show that these animals now live in the sea.

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