"Batu" means rock and "Merah" means red, as this site has a red tint to the slopes. This site offers two dives – a rich coral slope or a steep sand slope with coral bommies and a sunken fishing boat, and there is much to see here. A cleaning station at 24 meters is a focal point, but there is a wide array of nudibranch, pipefish, crustacean and cephalopod species.