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This photograph of a Horned Blenny was taken in a depth of just a few metres at Little Beach Nelson Bay NSW Australia on 13th June 2018.

I used my Nikon D500 digital SLR with a Nikon 60mm lens and two Inon Z-330 strobes on low manual settings. ISO 400, 1/250th sec, aperture F20, Exposure Compensation 0.