Nudibranchs, porous, Pacific, Blue Planet, pristine waters, Marine, biodiversity, marine sponge, Gastropods, Indonesia, Reef, Coral Reef, Coral Triangle, Molluscs, Colourful, Reefs, Seascapes, South East Asia, South-east-asia, PNG, Invertebrates, Diversity, sea slug, Tropical, porifera, Underwater, Papua New Guinea, Asia, Weird, Indo Pacific, Rhinophores, Seascape