I don't accept that old theory about a fish crawling out of the water, and developing legs, lungs and all that nonsense. That one is just a little too far fetched. I do think though that sea dwelling mammals were at one time land animals...millions of years back. My theory is the land, for some reason, or another became gradually inhospitable and it drove them into the sea...not back into the sea. I theorize that they were land animals to begin with, but because of the changing environment and the availability of a water mass for protection...they migrated there, then began to adapt and evolve into what they are now. |
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