- archipelago: a large group of islands
- bay: a small area of ocean partly surrounded by land
- channel: a narrow WATERWAY connecting two bodies of water; wider and deeper than a strait
- delta: a rich soil deposit usually triangular in shape found at the mouth of a river
- harbor: a shelterd area of deep water for ships to anchor;can be natural or man-made
- isthmus: a narrow strip of LAND connecting two larger land areas
- mouth: the place where a river ends
- port: the place where ships can load and unload;man-made
- sea level: the level of the surface of the ocean
- source: the place where a river begins
- strait: a narrow WATER passage between 2 larger bodies of water
- swamp: low, wet land
- volcano: a hill or mountain formed when melted rock is forced through the Earth's surface