Acoustic indicators 1 Acoustic indices 1 Christmas Island 1 Coral reefs 1 Cost effectiveness 1 Current monitoring 1 Decapoda (Crustacea) 1 Different frequency 1 Ecosystems 1 Equatorial Pacific Fasteners 1 Fish 1 Frequency resolutions 1 High frequency bands 1 Pacific Ocean 1 Pacific Ocean (Equatorial) 1 Passive acoustic monitoring 1 Reefs 1 Shellfish 1 Sound pressure level 1 Soundscapes 1 Underwater acoustic communication 1 Underwater acoustics 1 conservation status 1 coral reef 1 monitoring 1 species diversity 1 underwater environment 1