>>2971555It's an impossible mission. Water has a shitty feature that it makes everything monochromatic. It sucks away all the other colours than blue and makes everything bland and flat.
To shoot something close to you you need off-camera flashes, meaning strobe arms.
To shoot landscapes you need a wide angle lens (basically you can't go too wide) as you want the amount of water between your lens and the subject to be as small as possible, a tele is no good underwater, invest in the camera that has the shortest focal length as possible.
If you want to have good photos underwater and use natural light you want to be as close to the surface as possible. There you will have both light and colours. In the Baltic where I dive the max depth is around 2m, and there you get already a heavy green cast (murky waters so no blue light here) and lack of reds.
Shoot against the light. Wait for the afternoon. Stay shallow.
