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This photograph of a Moon and Lion's Mane Jellyfish was taken in a depth of about 5 to 7 metres in Port Fidaldo Inlet, Prince William Sound East Sector, Alaska, USA on 4th July 2017.

I used my Nikon D7200 digital SLR with a 12-24mm Nikon lens at a focal length of 12mm on manual setting and two Inon Z-240 strobes on TTL. ISO 800, 1/160th sec, aperture F13, Exposure Compensation 0.