alveopora spongiosa coral

12 alive alveopora animal aquarium aquatic biology circular closeup coral distinct distinctive exotic fleshy floral green harvested indopacific irregular knob large length light living marine natural nature ocean polyps poritidae porous region rods rounded saltwater sea shape skeleton slopes species spines spongiosa stony swollen symbiotic tentacles texture tips tropical turbid twelve undersea underwater various water whorls wild wildlife zoology zooxanthellae zooxanthellate