Pulse Corals are unique in that they’re constantly in motion!
Their polyps are long and thin and topped by eight tentacles which rhythmically open and close all day and all night.
It has nothing to do with capturing prey, for these corals get almost all their food from symbiotic, photosynthesising zooxanthellae.
It seems the pulsing actually assists those same photosynthetic microbes. It helps the coral get rid of oxygen so that their guests can better get to work turning sunlight into food.
It also happens to be rather mesmerising!
EY FATTY BOOM BOOM 