<P> In marine biology , the neritic zone , also called coastal waters , the coastal ocean or the sublittoral zone , refers to that zone of the ocean where sunlight reaches the ocean floor , that is , where the water is never so deep as to take it out of the photic zone . It extends from the low tide mark to the edge of the continental shelf , with a relatively shallow depth extending to about 200 meters ( 667 feet ) . Above the neritic zone lie the intertidal ( or eulittoral ) and supralittoral zones ; below it the continental slope begins , descending from the continental shelf to the abyssal plain and the pelagic zone . </P>
<P> In marine biology , the neritic zone , also called coastal waters , the coastal ocean or the sublittoral zone , refers to that zone of the ocean where sunlight reaches the ocean floor , that is , where the water is never so deep as to take it out of the photic zone . It extends from the low tide mark to the edge of the continental shelf , with a relatively shallow depth extending to about 200 meters ( 667 feet ) . Above the neritic zone lie the intertidal ( or eulittoral ) and supralittoral zones ; below it the continental slope begins , descending from the continental shelf to the abyssal plain and the pelagic zone . </P>
what is the drop off in the ocean
what is the drop off in the ocean
continental slope
continental slope