green mouth moon polyp colony move in strong current, fluorescent soft coral animal absorb dissolved organic matter

palythoa zoanthid zoantharia zoanthidea zoanthinaria anthozoa tentacle hexacorallia cnidarian coralimorph coelenterates soft coral coenenchyma zooxanthellae indopacific stalk capitulum octocoral palytoxin toxic poison detritus zooplankton intertidal subtidal aquatic biodiversity fauna ecosystem environment underwater captive wildlife aggregation lateral saltwater aquascape reef tank aquaculture tropical macro encrusting controlled conditions allmymoneygoestocorals shallow depth field selective focus glass refraction green mouth moon polyp colony move strong current fluorescent animal absorb dissolved organic matter popular pet led demanding species nano marine aquarium