[Ol' Sparky]

You're almost too stupid to correspond with. In fact, answer the criticism if you're capable. What did dolphins and whales evolve into? At some point, one or the other had to evolve from land mammals into mammals that lived in water.

Only IDIOT can't understand that process could not possibly have taken place in an evolutionary manner. Whales and dolphins could not have developed the multiple features necessary for survival in water while still on being land mammals or the species would die. Nor could whales and dolphins have developed the necessary features in water while possessing the numerous features necessary to live on land.

But, the "genius" that you are, perhaps you could explain how whales and dolphins evolved from being land mammals to ones that live in water. Give it a try.