Isthmus is a narrow piece of soil connecting two bigger land areas, usually v water on either side. A peninsula is a item of land the is nearly surrounded by water but associated to mainland (via an isthmus). So a peninsula is often defined as land surrounding by water on 3 sides.

You are watching: An area of land surrounded by water on three sides

Isthmus matches Peninsula comparison chart
IsthmusPeninsulaWater neighboring the landmass Size Access by Formation Single or in groups Inhabitation Examples Plural
On two sides (the other two sides is land the the narrow isthmus connects) On 3 sides
Narrow, commonly not an extremely long when contrasted to the land mass the connects to Significant
Land, air and water Land, air and water
Isthmuses are formed via a series of occasions like change in the tectonic plates and also volcanic eruption. Peninsulas are formed through a gradual rise in water level, bordering land at short elevation.
Single Single
Usually uninhabited Usually inhabited
Isthmus the Suez in between North Africa and Sinai Peninsula; Isthmus of Panama, connecting North and also South America Horn the Africa or Somali peninsula, Somalia Paria Peninsula, Venezuela, Indian Peninsula
Isthmuses or Isthmi Peninsulas


Most commonly, peninsulas are developed via rising water levels because of increased temperatures and also typically whereby the land is at a low elevation. Gradual rise in the water level leads the land come be surrounded by water on three sides, and develop right into a peninsula.


The Panama isthmus is a good example of just 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 volcanic eruption resulted in the seabed to rise and underwater volcanoes arised out the the water creating some type of solid land. These bit and also pieces the land were joined with each other by sediments lugged from adjoining land of North and also South America. That took countless years because that this Isthmus come come into existence.


Isthmus is acquired from old Greek word isthmu meaning neck; when peninsula is acquired from a Latin native paeninsula, whereby "paene" means almost and "insula" means island. Therefore, a peninsula, is "almost one island". A peninsula is additionally called Half-island, a headland (head), cape or island promontory.

The many of isthmus is isthmuses or isthmi and also the plural kind of peninsula is peninsulas.

Famous Peninsulas and also Isthmuses


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

See more: Catalytic Converters For 2005 Dodge Durango Catalytic Converter Location

The Panama Isthmus is the most well known isthmus. Its development is considered one of the most necessary geological event to take place on Earth. It had actually an enormous impact on the climate and environment. It re-routed the currents in both the Atlantic and also Pacific Oceans. That directly and also indirectly affected ocean and also atmospheric circulation patterns, i beg your pardon regulated trends of rainfall. It resulted in migration of livings points from and to North and also South America.