"Alright: since you can't actually point to an example and say "well, it's been tried, but it didn't work", then I'll point you toward examples of this actually having been done: Look at all of the breeds of dogs that have been created by man by selective breeding, where a specific desirable trait (similar to the ability to get food in every deeper water) has been breed into a dog."
Sorry cannot resist....
Got to love how you credit 'man' to creation of a 'breed' and totally ignore who created the DOG!
The domestic dog was created by man.