Well guess what ?
Evolution doesn't work like that.
First of all, what crawled out of the ocean, was a fish capable of wobbling for short distances after of course it evolved into a fish in the first place to begin with, and that would evolve into amphibians, who would evolve into reptiles, and then most of them would be wiped out in the Permian extinction.
Which opened the door to Dinosaurs and then the Theropods, the predatory dinosaurs would evolve into birds.
During the dinosaurs, an animal the size and shape of a modern mouse, was your mammal, but of course by your logic a modern horse, cat, and dog, and bear, and a rhino are mice.
The dinosaur would be wiped out by a Meteor, which paved the way for millions and millions of years of mammal evolution and specialization, until a primitive primate evolved, who would then take another whole gaggle of millions of years to evolve into monkeys, and apes, apes from which basic humans evolved.
So that line of bogus that humans walked out of the ocean is a strawman line of BULL.
And amongst the Humans, We're not the only ones, nor are we the first ones, or anywhere close to it.
There were also evolutionary dead ends that would never have evolved into Us, We won by competition.
I'm also not from Africa either.
I'm from approximately 200 people who left Africa about a entire million years ago during the last ice age.
And that is exactly how evolution occurs, a small group of a species leaving the larger group, and seeking new niches and environments.
Of those approximately 200 who originally left Africa, I'm from those who would inhabit western Europe, and long since evolved modern European traits and European behavior.
I don't have short limbs, a stocky, streamlined, muscular body, white skin, blue eyes, red hair and freckles, and an inclination towards industry and technology and agriculture and wealth for nothing.
I have it, to survive in Europe's natural environment, before we built it up.
My DNA doesn't trace back to Africa, and I had it tested and neither does any other white person's DNA either.
So kiss my proud white ass.
And Here's something else..
And this is what I have to say about the accusations of "racism".
I'm not sorry for the fact that every single country that my people has made, is a success in what they have the means to be known for around the world.
I'm not sorry that my people began the Industrial Revolution that is responsible for everything that modern man kind knows today, and how people live today.
I'm not sorry, that my people are the standard by which governments and political systems, legal systems, criminal justice systems, militaries, etc etc...
And education, engineering, technology, medicine, agriculture, urbanization, architecture, art and fashion, literature and language, and human organizational capacities, and banking and financial institutions and systems are judged.
I'm not sorry for my countries around the world, all having a legal system designed to make people be qualified to do things that they want to do, BEFORE they go and do it, AND to do so without killing the market and without hurting the consumers, customers, clients, patients, you name it.
I'm not sorry for my people having what they work for, what they buy, what they pay taxes for.
I'm not sorry because those countries that SOME of my people made, like New Zealand... while they aren't rich.... they ARE avid farmers and they have a thriving economy, because they're intelligent and educated.
I'm not sorry, because the countries populated by my people, have the least corrupt politicians in the world.
I'm not sorry for something that happened a whole 5th of a millennium ago, that you still haven't recovered from, because you're an idiot....
So I suggest you get over it.