here is 2 pictures taken in a fairly murky estuary in mexico, one processed and since printed something like 12x16 and i am very happy with the print. the other straight out of the fuji xp60 (or 90 not sure). happy with the camera considering the low price (paid 190 i think)
i rarely need to take underwater photos, and im not looking to make fine art giant prints with it when i do, so i like it. not sure how much better they would process with raw, maybe the colour cast but i doubt it. you are underwater, the light is blue, you arent going to pull out a lot of red details without coloured flashes, thats what i thought.
have you looked around underwater? there is not much contrast and everything is tinted to blue.
heres a local guy doing some cool underwater work, you need to spend a bit more to get these shots methinks.
he uses a ton of lighting, almost every shot is not just natural light.www.eikojonesphotography.com