This is a sheltered series of lava bowls offering good hard coral growth (esp. lettuce corals) in shallow depths, no current and visibility better than anywhere else in the Strait. The dive site is named Batu Angus because "Batu" means rock and "Angus" means burns, signifying the hardened lava rock in the water. Although there are few schooling fish, this is an excellent place for snorkeling. For divers this site is known for mandarin fish which can be seen mating and fighting at dusk.