Hawaii has a wide variety of beach sand, but Black Sand Beach in Waianapanapa State Park had one of my favorites. The sand size varied from tiny grains up to round pebbles as shown in this photo.
It was in this location that I proved that Gore-Tex trail running shoes hold water very well - and might not be the best footwear for photographing this subject.
Because the pebble size I was photographing was still below the water line at times, I needed to move into place and get my shots before getting out of the way of the next incoming wave. Most of the time, this tactic worked.
I rarely regret shooting landscape details along with the grand scenes. Having macro capabilities built into this lens is a real bonus.