This is one of my favorite underwater photos. Admittedly, however, I have many favorite underwater photos.
We were drifting along a wall in the Hilutungan Channel (between Mactan and Olango islands, Cebu Province, Central Visayas, Philippines) when a school of fish started to pass in between me and the wall. I took many photos of these fish, but this one stood out from the rest.
It wasn’t until I looked at the photo on land that I noticed the indentation in the wall, and that the fish were swimming in a manner such to fill in the groove. If you look quickly, as I did the first time, it looks as if the fish are actually part of the wall!