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This shot of a Sea Horse was taken in a depth of just a few metres in Clifton Gardens, Chowder Bay, Sydney on 23rd June 2011.

I used my Nikon D200 digital SLR on manual settings with a 60mm Nikkor lens and two Inon Z-240 strobes on low manual settings. ISO 200, aperture F13, shutter speed 1/60th, Exposure Compensation 0.