two high and two low a day but one is higher than the other; and one is lower than the other What are polyps? tentacles are faced upwards What do polyp do? they provide 90% of food - seject plant-like cells, while the coral looses their colon and main source of food ...
Feed on seaweeds and seagrasses (especially drifting) plus attached encrusting organisms Mouth includes Aristotle’s lantern (system of jaws and muscles used to bite off algae, other food from bottom) *drawing-sea urchin, sand dollar* III. Phylum Echinodermata...