Cabo Pulmo National Park is a marine success story. Only twenty years ago it was protected by the Mexican government as a reserve. Within that time its had one of the fastest grow backs of marine life anywhere in the world. https://en.wikipedia.org/wiki/Cabo_Pulmo_National_Park
Shots like this are generally termed as half in half out or splits. I wanted to capture the Sonoran desert coastline from the sea. However, rather than take a normal shot from the boat, I realised when diving there that it would be nice to take a shot of what it looks like from my dive mask. When we surface the deep blue suddenly appears below.. its beautiful. I only wish there had been a whale shark in front of me at the time.