trying to make an underwater scene can i get some advice

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underwater is like outer space except with blue ambient light and caustics

>>3007365
You're gonna need a better grid

ambient light, caustics, and grids
can i haz more

>>3007373
Not true. Water can have currents and distortion from them, and light refracts completely different underwater. Visibility will change with depth, and fresh is different from salt.

Water can be any color from green to blue, or yellow over sand.

Just go search underwater scenes on Flickr, and study the light and visibility and such. Underwater lighting will have more ambient light closer to the surface, and more contrasts in deeper water.