Isthmus is a narrow piece of floor connecting two bigger land areas, usually with water on one of two people side. A peninsula is a piece of land the is virtually surrounded by water but associated to mainland (via one isthmus). Therefore a peninsula is often characterized as land surrounding by water on three sides.

You are watching: Land surrounded by water on 2 sides

Isthmus matches Peninsula comparison chart
IsthmusPeninsulaWater bordering the landmass Size Access through Formation Single or in teams Inhabitation Examples Plural
On 2 sides (the various other two political parties is land the the small isthmus connects) On 3 sides
Narrow, generally not really long when compared to the floor mass the connects to Significant
Land, air and water Land, air and water
Isthmuses are developed via a series of events like shift in the tectonic plates and volcanic eruption. Peninsulas are created through a steady rise in water level, bordering land at low elevation.
Single Single
Usually uninhabited Usually inhabited
Isthmus the Suez between North Africa and Sinai Peninsula; Isthmus that Panama, connecting North and South America Horn the Africa or Somali peninsula, Somalia Paria Peninsula, Venezuela, Indian Peninsula
Isthmuses or Isthmi Peninsulas


Most commonly, peninsulas are formed via rising water levels due to increased temperatures and typically whereby the soil is in ~ a short elevation. Gradual rise in the water level leads the land come be surrounded by water on three sides, and also develop into a peninsula.


The Panama isthmus is a great example of how isthmus is formed. Prior to this isthmus was developed North America to be separated from south America. A collection of occasions like transition in the tectonic plates and also volcanic eruption brought about the seabed to rise and also underwater volcanoes arised out the the water creating some type of hard land. This bit and pieces of land to be joined with each other by sediments brought from adjoining floor of North and South America. The took countless years because that this Isthmus come come into existence.


Isthmus is derived from old Greek word isthmu an interpretation neck; while peninsula is obtained from a Latin native paeninsula, wherein "paene" method almost and "insula" method island. Therefore, a peninsula, is "almost one island". A peninsula is also called Half-island, a headland (head), cape or island promontory.

The plural of isthmus is isthmuses or isthmi and the plural type of peninsula is peninsulas.

Famous Peninsulas and Isthmuses


The Arabian Peninsula is the largest peninsula on earth. It sits on Arabian tectonic plate, i beg your pardon is progressively moving away from Africa towards the Eurasian plate. The continent of Europe is likewise a peninsula, through the Mediterranean Sea ~ above the South, the Atlantic ocean on the West, the phibìc Sea and Baltic Sea on the North and also Asia to the East.

See more: Where To Find Rock Climb In Soul Silver ? Where Are Places To Rock Climb

The Panama Isthmus is the most famous isthmus. Its development is thought about one of the most essential geological occasion to happen on Earth. It had an enormous impact on the climate and also environment. The re-routed the currents in both the Atlantic and also Pacific Oceans. It directly and indirectly influenced ocean and also atmospheric circulation patterns, i m sorry regulated fads of rainfall. It led to migration of livings things from and to North and also South America.