Intertidal zone

Intertidal zones – where he ocean meets the land, intertidal, or littoral ecosystems extend between the farest reaches of the high and low tides, which are the periodic rising and falling of the ocean’s heigh at a given location, caused by the gravitational pulloff the moon and sun. Intertidal organisms spend part of each day submerged in water, part of the day exposed to the air and sun, and part of the day being lashed by waves. Sessile animals such as anemones, mussels, and barnacles live attached at rocks, filter-feeding on plankton in the water that washes over them.