TriX wrote:
I'm afraid you've reached the limits of the P&S without a flash on the second shot. As you now know, the water acts as a filter admitting mostly blue light as you go deeper, hence the reason many scuba divers use a flash at depth. As for processing the 2nd shot, hopefully someone on the forum with more experience can assist further.
Thanks - I was afraid that would be the answer as I am aware of light at depth but I though it was worth a try. We'll see if anyone else had an idea.