because water in oceans and seas is salty
Because... an isthmus - is a (usually) narrow tract of land jutting out into a body of water. An island is a piece of land totally surrounded by water.
A peninsula is a region of land surrounded by water on at least three of four sides and connected to a larger piece of land. A sea is a body of water, and thus cannot be called a peninsula.However, seas are usually surrounded by land on three sides, sometimes almost completely surrounded by land, which does make them seem like a water version of a peninsula. There are also inland bodies of water called seas, such as the Dead Sea or Caspian Sea, but these are technically saltwater lakes.
The difference between seas and oceans is the size of the area. The ocean is much larger than the sea and a sea is often surrounded on three sides by land.
An island is a piece of land entirely surrounded by water.
The Peloponnesus is a peninsula, which is a piece of land surrounded almost totally by water. The Peloponnesus consists of mountains, river valleys, plains, surrounded by the Mediterranean and Aegean Seas.
Not all seas are completely surround by land. There are three major types of seas which are hypersaline lakes, nearly enclosed seas and partly enclosed seas.
Land surrounded by water is an island. There are similar land forms such as peninsulas that are not totally surrounded, but connected to the mainland.
An island.
example of water surrounded by land is lake but not absolutely because there is a lake and other bodies of water like seas or oceans connected by rivers.
The meaning of your question is unclear. Japan today, is surrounded by oceans and seas.
Hawaii (4 sides) Floridia (3 sides)
because water in oceans and seas is salty
Smaller bodies of salt water usually surrounded by land are called seas. An example would be the Dead Sea between Israel and Jordan.
The state with no water at all is Wyoming.
The fact that Europe is a peninsula and is mostly surrounded by water. This allowed for Europeans to easily sail the seas and travel the world.
Seas are completely surrounded by land and oceans have no other boundaries besides their coastlines.