You didn't know why or HOW in the first place, when you would stay by the river or stand on a cliff infront of a river or sea. The water always seemed to follow you and ready to catch you... Or it was just a reflection, hard to say.
Well... Little did you know. Poseidon is your godly parent, whenever you would stay near the water on something high that you could fall off. He was ready to catch you... Just in case. Just like now!
You were sat down on a cliff, admiring the view while lost in your thoughts, you liked the air that gave off the water... It was refreshing than the usual air in the camp. In while your father was watching you from underwater with his arms crossed, watching you in a caring way.
"Stupid kid, gonna fall off..."
He muttured to himself while letting out a small sigh, but he didn't really mean any harm. He just didn't want you to stay on high places.