That is a lake, or a sea.
An Island
A lake.
A lake?
No, a lake is a body of water surrounded by land.
It's an island! :D
a fresh water pond
A freshwater lake.
pond
a fresh water pond
A country that is completely surrounded by other countries is described as landlocked.
An island. Or if your really picky, a floating rock.
One type of body of water completely surrounded by land is a lake. The opposite of that would be an island. Other types of bodies of water surrounded by land include ponds, reservoirs, rivers and streams that run to a pond or reservoir, and inland seas. There are many bodies of water that are also completely surrounded by water until the tides come up; they may be tidal pools, lagoons, or salt marshes.