The splash zone is the specific part of the littoral zone located above the high tide mark, which receives moisture primarily from ocean spray and wave splash but is rarely, if ever, submerged by the tides. It is only fully inundated during severe storms or unusually high spring tides.

B. benthic zone: This refers to the ecological region at the lowest level of a body of water, including the ocean floor or the bottom of a lake, not the area above the high tide mark.

C. subtidal zone: This area is always submerged underwater, extending seaward from the low tide mark to the edge of the continental shelf.

D. intertidal zone: This zone is located between the high and low tide marks and is alternately exposed to air and covered by water with each tidal cycle, unlike the splash zone which is above the high tide mark.