Before revision: 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.
After revision: ,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.