The Earth generated from the birth of a god, Poseidon. It grew and grew until it couldn’t anymore and was filled with water. Then a day came when the God of the Sea, Poseidon finally developed the powers to be able to generate the sea, and other life using the sea.
He used his trident to create life. His trident had three main points which were the three main life he created. His first spike on his trident made the creatures of the sea. These creatures included seahorses, fish, and other sea animals.
His second spike gave him the ability to control the weather.