What if the fish never came out of the water?

It all started when the shadow of humans did not even fall on the earth, about 480 million years ago. 2 billion years after the Big Bang, a movement was occurring under the sea. 6 elements had come together to lay the foundation of the present earth. Oxygen, hydrogen, carbon, nitrogen, Sulphur, and phosphorus were joined together to form a new life. And the first of these were DNA which was sitting inside the sea hiding the secret code of life. Life was about to begin on the planet for the first time after 700,000 years of Earth's formation. Now the time was 550 million years ago when everything on earth was going to be wild. Because biology took birth in the form of fishes. And these are the same fishes that later come to the ground in the form of amphibians. But what if the fishes didn't leave the ocean and come to the ground? Would everything be as it is today? Could humans ever be born on this earth? Let's look ahead.

The sea had everything that a good life needed to flourish. The fish were using their gills to breathe in the water. The amount of oxygen in the ocean had increased a lot, so the oxygen was now leaving the sea and coming out. Due to the gravity of the earth, all the oxygen that came out of the ocean had formed a covering around the earth. And this covering was later to be named the ozone layer. Because of the simultaneous presence of oxygen and hydrogen in the atmosphere, the water vapor began to form and soon a large group of dark clouds covered the earth's sky. And then it started raining heavily on the land, due to which the sea level increased and, bacteria and algae were born. The moss camped on the stones of the ground, and these mosses were supposed to combine with the carbon dioxide to form the plants. Tree, plants together had made some part of the stones very weak. After a few years, the broken stones took the form of soil. Trees, sun, and oxygen took on the task of getting the rain to fall. Due to the soil, water started accumulating in some places. Small bacterias were born in stagnant water, and after joining with other bacterias, a small lizard was born, which was going to start life on the ground later. Lizards dominated the earth for a few million of years, then a new era began with a cataclysm in which mammals took over. 

Mammals, which were an advanced species of lizards. These were lizards that had started living on trees, and ate leaves. The small mammals that had survived in that cataclysm were now slowly taking over the whole earth. These large forms of mammals later take the form of monkeys and many different animals. But we were going to come from monkeys. Monkeys had a habit, because of finding food, they used to travel from one place to another. Due to walking on four legs, they could not see the hunters hiding in the dense bushes and the danger increased for them, some monkeys saw that by standing on two legs they could see their food and hunters from a distance. And this is how the human race began. Because of that cataclysm, the land was separated, and this land later became the continent. 

Whatever be the way, but whatever is written in whose fate, whatever nature has decided for us, it will happen. No matter how hard you try to change it, it will happen.