shallow water zone of intertidal area on the continental shelf is called as
Continental shelf A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water known as a shelf sea. Much of the shelves were exposed during glacial periods and interglacial periods.
Borders of the oceans Though generally described as several separate oceans, the world's oceanic waters constitute one global, interconnected body of salt water sometimes referred to as the World Ocean or global ocean.[1][2] This concept of a continuous body of water with relatively free interchange among its parts is of fundamental importance to oceanography.[3]