Thanks cityofangels!! :sweatsm:
But really, it was more a case of "right place, right time" kind of thing. The natural lighting made this shot.
frankielim, i used the Sigma 15mm FE. Its a real pleasure to use underwater. On a 1.6x crop, there is minimal distortion which is hard to discern for underwater shots where there are no real straight lines. But f2.8, speed of focus, compactness ... the lens basically handles well.