Same time, next day and no crowds.....

You can just detect the coral looking through the face of the wave above. These waves break in shallow water over a live coral reef. While on the wave, you can see through the water in front of you and when the wave gets to the inside, it looks like you are moving over a glass table covering the coral and fish.

The following series of frames are from one wave with an elapsed time of 15 seconds between first and last frame (After the last frame taken, I did a "Hawiian Pullout" due to the shallow water):