The lighting effects look good except why is there two of them if there is only one sun? XD
I like dark seaweed, even the ground of the sea is impressive.
The scenery is supposed to be an undersea cavern, where pillars and cave walls block some sunlight.
So....yeah that's the reason I guess XD
I am also very proud of my sea bottom XD
Note that yes everything is original and made in Photoshop