Apollo starts the fight by scorching Poseidon's sea place. Poseidon was surprised by what damage Apollo had done. Poseidon quickly transformed himself into a seahorse sneaking out and almost struck Apollo with his trident. Apollo knowing that Poseidon was going to do this dodged the trident. The two then continued to fight for days.
The two fought for so long that they were shaking and destroying mother Gaea. Apollo finally shots his bow and arrow that Zeus himself gave him. Zeus immediately figured out that they were fighting. Zeus stormed down and stopped the fight between Poseidon and Apollo. Both gods stopped to see how Zeus was going to judge them.
Zeus had a solution to satisfy both of them. Zeus king of gods gave all of spring to Poseidon to do whatever he wants and for Apollo to keep summer. The two never talked or fought about seasons again. Poseidon and Demeter made spring a season of rain to grow crops. Apollo kept summer the same. THis shows you that even gods get a little jealous.