Sandy Beach on Oahu really is sandy, but toward one end it has these interesting lava rocks. Watching the waves crash on the rocks is rather hypnotic. Even though the sunrise colors were very lovely I think black and white brings out the drama of the water.
All photos were taken with my Sony RX10iv. I use Raw Therapee to do the basic adjustments then load the resulting .tif files into the GIMP. I used Nik Silver effects to convert to black and white, then did some touch up and added a vignette using the GIMP.