(15) Tidal sand and mud flats-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