Inside the Sanur reef the sand is all white—tiny pieces of broken down coral. ThIs can make it hard to walk on—hard on the feet, and with so much space between the grain there’s often alot of ‘sink’. In the more northern part of Sanur—on the other side of the marina—where there is no more reef, and the boats go out to Lembongan and the Gili Islands—the sand is black again, like the many rocks of this volcanic isle.