Isthmus is a narrow strip of land connecting two larger land areas, usually with water on either side. A peninsula is a piece of land that is almost surrounded by water but connected to mainland (via an isthmus). So a peninsula is often defined as land surrounded by water on three sides.
Accordingly, what is a piece of land almost completely surrounded by water?
A peninsula is land almost surrounded by water. An isthmus is a neck of land joining two larger bodies of land. A gulf or bay is a portion of some large body of water extending into the land.
What is a body of water that is completely surrounded by land?
Island Body of land smaller than a continent that is surrounded by water. (Greenland is the largest island). Isthmus Narrow section of land connecting two larger land areas, surrounded on two sides by water. Peninsula Extension of land surrounded on three sides by water.
What is a large area of water that is surrounded by land?
An area of land that is completely surrounded by water is an island. Low, watery land formed at the mouth of a river is a delta. A thin strip of land that connects two large land areas is an isthmus. It is surrounded on two sides by water.