invasive alien pest anemone anemonia majano, green tentacles on oral disc, green cladophora algae

anemonia manjano actiniarian oral disc zooxanthella nematocyst photosynthetic poison venomous bulbous tip coralimorph hitchhiker aggressive carnivore refugium actinia brown button palythoa zoanthid cnidaria biodiversity biocenosis damselfish fauna ecosystem environment underwater wildlife aggregation community saltwater aquascape reef tank aquaculture current motion tropical coral controlled conditions farm cultivation understanding nature ocean actinic blue macro soft coelenterates explore species invasive alien pest anemone majano green tentacles cladophora algae nano marine aquarium business aquarist coquina live rock aquadesign