GEOLOGY

Detailed explanation-1: -In general, a sea is defined as a portion of the ocean that is partly surrounded by land. Given that definition, there are about 50 seas around the world.

Detailed explanation-2: -Answer: An area of land that is completely surrounded by water is called an island.

Detailed explanation-3: -A piece of land surrounded by water on three sides is called peninsula.

Detailed explanation-4: -Intertidal. the area of shoreline between the highest high tide and the lowest low tide. Nearshore. The nearshore zone encompasses the foreshore (intertidal from the highest high tide to the lowest low tide) and subtidal zones (below low tide zone) to a depth of 10 meters.

Detailed explanation-5: -The seas which are extensions of the ocean and are partially surrounded by land are known as marginal sea.