GEOLOGY

Detailed explanation-1: -Area which is dry at low water (LW) and submerged at high water (HW), where LW and HW refer to mean spring tide. The beach face, tidal flats and (parts of) salt marshes are intertidal zones.

Detailed explanation-2: -The intertidal zone is the area where the ocean meets the land between high and low tides.

Detailed explanation-3: -The intertidal zone experiences two different states: one at low tide when it is exposed to the air and the other at high tide when it is submerged in seawater. The zone is completely submerged by the tide once or twice every day.

Detailed explanation-4: -The high intertidal zone is only covered by the highest of the high tides, and spends much of its time as terrestrial habitat. The high intertidal zone borders on the splash zone (the region above the highest still-tide level, but which receives wave splash).

Detailed explanation-5: -The intertidal zone (sometimes referred to as the littoral zone) is the area that is exposed to the air at low tide and underwater at high tide (the area between the low and high tide lines).