Um...there ARE NO details. Here is what I will say: science simply cannot in any way beyond conjecture show/prove/demonstrate that fish eventually became humans. Land roving fish or fish with 4 legs do not prove/show/demonstrate that they eventually evolved to become apes. You may think so; others may think so; I no longer do. Because there really IS no demonstrable proof, and yes, proof is the only word possible here. Fish remain fish. Chimpanzees remain chimpanzees. (Humans remain humans.) I used to believe what "science" taught me in school. I believe that vaccines can help mitigate the ill effects of some diseases. I am not against science. Imagining the evolution of fish to humans (first apes, then humans from some unknown common ancestor ape) is something I no longer believe because -- it (1) is not provable, (2) is not demonstrable, (3) fossils that appear to look like apes or fish or birds do not prove/demonstrate/show the various forms evolved. (Have a good one...)