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> DAVID: [i]Being able to handle both terrestrial and aqueous life gave it access to both styles of living as predators. I still want to know why they became totally aquatic with all the attendant physiological adaptations that were required to be solved.[/i]
> 
> Yet another link in the whale chain. May I suggest that over the course of time, the whale’s ancestors found life at sea to be more productive than life on land, and consequently the cell communities that form legs restructured themselves to form flippers, which are better adapted to life in the water. All the other changes would have taken place in the same way and for the same reason. Too obvious? I find this considerably more convincing than the theory that your God changed legs into flippers before pre-whales entered the water, and I would also like to know why he left these particular pre-whales with legs but gave them a tail.
> 
> Thank you for all the other articles. I don’t feel that there is any need for me to comment, other than to register my appreciation for this ongoing education.