Coral Physiology
-- cnidarians
-- capture food with stinging cells called cnidocytes
-- related closely with sea anemones and jellyfish
-- live entire adult lives as polyps
-- polyps are sessile
-- polyps tend to be simple in appearance
-- two categories    -- ahermatypic      -- soft corals      -- do not build reefs    -- hermatypic      -- hard corals      -- build reefs











