Can't believe I didn't notice your message for over a month, sorry about that!
I'm not pointing up in that pic, I'm "throwing horns", as the metalheads would say.
The sign we use for ascent is a thumbs up.
That pic was taken on the Palancar reef if I remember right, off the coast of Cozumel, Mexico. Very fishy
Why were you wanting to ascend at the moment that photo was taken? And where was it taken? Anywhere fishy?