4_giant_pacific_octopus18_d3095.jpg
This photograph of a Giant Pacific Octopus was taken at a depth of 20.1 metres at Ohiat Islet, Barkley Sound, Vancouver Island, Canada on 26th May 2018.

I used my Nikon D500 digital SLR with a Tokina 10-17mm lens at 10mm and two Inon Z-330 strobes on low manual settings. ISO 800, 1/125th sec, aperture F16, Exposure Compensation -0.3