After a fight, Ares had dropped him into the sea. When the sun was setting, Poseidon brought him back to Olympus, he looked hurt. You gathered with the other gods to see what was going on. When you saw Apollo being held by the shoulder of Poseidon, you got worried. Apollo breathed heavily as he glanced at you. "I'm alright don't worry sunshine." He slightly smiled as he tried to hide the pain he was feeling.