(F) tidal sand or mud flat-silt, clay, or sand substrates, unvegetated or vegetated by algal mats, that occur in the intertidal zone and that are regularly or intermittently exposed and flooded by wind and water induced tides;
(algal mats; occur; L:in the intertidal zone) (algal mats; are regularly; exposed and flooded by wind and water induced tides)
algal mats algal mats
occur are regularly
L:in the intertidal zone
exposed and flooded by wind and water induced tides