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The intertidal zone or foreshore is the area above water level at low tide and underwater at high tide; in other words, it is the part of the littoral zone within the tidal range. This area can include several types of habitats with various species of life , such as sea stars , sea urchins , and many species of coral with regional differences ...
The infralittoral zone is the algal-dominated zone down to around five metres below the low water mark. The circalittoral zone is the region beyond the infralittoral, which is dominated by sessile animals such as oysters. The subtidal zone is the region of the neritic zone which is below the intertidal zone, therefore never exposed to the ...
The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. [1] In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas that are permanently submerged — known as the foreshore — and the terms are often used interchangeably.
General sketch-map of a tidal plain, showing the typical tripartition in supratidal, intertidal and subtidal zones. The most apparent character of the area is the development of tidal channels, affecting mainly the intertidal zone.
The intertidal or littoral zone: area between the high and low-tide marks. Can be further divided into high, mid, and low intertidal zones, which are explained below in more depth. [4] The sublittoral or subtidal zone: area below the low-tide mark. The presence and abundance of flora and fauna vary between zones along the rocky shore.
A rock, seen at low tide, exhibiting typical intertidal zonation. A specimen of the shell Pinna nobilis exposed by low tide. Because intertidal organisms endure regular periods of immersion and emersion, they essentially live both underwater and on land and must be adapted to a large range of climatic conditions.
The normal tide pool is separated into two main zones. The Intertidal zone and the Subtidal zone. The Intertidal zone is only covered with sea water during high tide, while the Subtidal zone is closer to the ocean and is covered during low tide. The distinctive separation of organisms into bands along the shoreline is called Zonation.
Original - Marine biologists and others divide the intertidal region into three zones (low, middle, and high), based on the overall average exposure of the zone. The low intertidal zone, which borders on the shallow subtidal zone, is only exposed to air at the lowest of low tides and is primarily marine in character.