A bright white scrap of broken coral sitting just above sea level off Hatoma, reachable only by boat. Outfitters in Uehara run half-day snorkel and dive trips to Barasu — usually combined with a stop at the smaller Hatoma island.
The reef around Barasu is exceptional: clear water, healthy hard corals, and a good chance of seeing turtles. The islet itself is treeless and exposed; bring sun protection and water.