Decrease light and answer easily: Have 5 meters visibility only?
To still can take the picture of “ clean ” in muddy water, should the output of bring down flashlight. Also should consider to add last astigmatism at the same time board the reflex of the floating dust in avoid a photograph.
Come from nature, prep above nature: In this pair of photograph, it is true that the bright-coloured color of the Mediterranean sea fan below blue seawater setting is not, flash however technical result. This kind of effect that tries to emphasize to natural facial expression, the Lv that can want through you are being added before flashlight is lubricious piece go getting. 
Have constructive passivity flashlight: A passivity the result that flashlight can yield your photograph to get extraordinary. This kind of passivity flashlight can be decorated in extensive role picture, also can go by yours accompany or taking like flashlight of model elephant dive.