Just scene setting. Haroon Degia of The Dive Shop www.divebds.com in Carlisle Bay.
This one's with manual white balance - and actually too much red. 12m.
For comparison, same pic with auto white balance - not good, even when quickly corrected. 12m.
Manual white balance, 15m
This on the Stavronikita was pushing the envelope... at 30m at 400 ISO it's underexposed (I should have used 1600 ISO).
