This photo was taken on a freediving trip to Jervis Bay in NSW, Australia. After a long day diving we were lucky to come across this cave that had amazing light shining through. While it might not look like it, it was rather difficult conditions as the water surge in and out of the cave meant I had to time my shot. The the low light conditions did not help my a6400 either. As with all underwater photos, some editing is needed. Had to use Topaz Ai to handle some of the noise in the picture and have also adjusted contrast (you loose a lot through the water) and colours.
Masterful shot