Do you see that pool the gene pool all animals did not come from there this just shows the line of creatures let's go back to the beginning see that microrganism that's you but not you yet and see that plankton (sponge Bob joke) you eat that and you grow you get smarter and you get extra parts now you are a spore you are in a plant like place there is seaweed but it's huge and you are small but you eat thr seaweed it can not hurt you so you grow some more you and the rest of the spores eat it to but the other spores don't turn out like you the environment and food they eat give them special appearances but you fall under the same kingdom or gene pool some spores become deadly legless or other Bazaar features and some are so rare in the gene pool they look like somthing out of a movie but you are all fish but then your dna starts changing and then your gills close then you go to land you try to walk but you can't so you crawl (hey your taking you much time) okay okay last all the gene spreading let's go to mankind