South-east-asia, Marine, pristine waters, Coral Reef, biodiversity, Coral Triangle, Osteichthyes, Papua New Guinea, Blue Planet, Schooling, snapper, swarm, Underwater, reef fish, Seascapes, Diversity, South East Asia, vertebrates, Indo Pacific, Red, Pacific, School of fish, Blue, Shoal, Social Behaviour, PNG, Asia, Reef, Seascape, Tropical, solidarity, Reefs