Agence France-Presse: The predatory crown of thorns starfish is threatening Indonesia’s portion of the "coral triangle," the richest area of coral reef biodiversity on the planet, scientists warned Tuesday. The starfish have been discovered in large numbers by researchers from the Wildlife Conservation Society and the Australian-based ARC Centre of Excellence for Coral Reef Studies, who surveyed reefs around Halmahera in Indonesia’s Maluku Islands, a press release said. The triangle lies …