Very directional natural light illuminates the top of a scorpion fish, Kimud Shoal, #Phillipines

Split toned in #darktable #MonochromeMay

Thresher Shark, Malapascua, #Philippines.

Shot in natural light, partly because of park rules, and partly because it is far from my feeble strobes. Split-toned in Darktable. #MonochromeMay.