I wish I could have jumped into the water to get a lower pov, but being able to get close enough for this to be a full frame with a 400 was exciting. The water was crystal clear.
Canon XTi 400 5.6L 1/500s f5.6 ISO 400 eval metering
Great to see the feet so well. The whites are very overexposed. If the original is RAW you could try change the exposure and use the recovery highlights slider.