16_australian_sea_lion11_d3362.jpg
This photograph of an Australian Sea Lion was taken in a depth of about just a few metres near Hopkins Island, South Australia on 24th April 2019.

I used my Nikon D500 digital SLR with a 10-17mm Tokina lens at a focal length of 17mm on manual setting and two Inon Z-330 strobes on TTL. ISO 400, 1/250th sec, aperture F10, Exposure Compensation 0.