A recursive island or lake, also known as a nested island or lake, is an
island
An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...
or a
lake
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...
that lies within a lake or an island.
For the purposes of defining
recursion
Recursion occurs when the definition of a concept or process depends on a simpler or previous version of itself. Recursion is used in a variety of disciplines ranging from linguistics to logic. The most common application of recursion is in m ...
, small continental land masses such as
Madagascar
Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...
and
New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
count as islands, while large continental land masses such as
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
do not. Islands found within lakes in these countries are often recursive islands because the lake itself is located on an island.
Recursive islands
Islands in lakes
Islands in lakes on islands

There are nearly 1,000 islands in lakes on islands in Finland alone.
Islands in lakes on islands in lakes
Islands in lakes on islands in lakes on islands
Islands in lakes on islands in lakes on islands in lakes
Recursive lakes
Lakes on islands
Lakes on islands in lakes
Lakes on islands in lakes on islands
Lakes on islands in lakes on islands in lakes
See also
*
List of endorheic basins
*
Volcanic crater lake
A volcanic crater lake is a lake in a volcanic crater, crater that was formed by explosive eruption, explosive activity or a caldera, collapse during a types of volcanic eruptions, volcanic eruption.
Formation
Lakes in calderas fill large crate ...
*
List of islands by area
This list includes all islands in the world larger than . For size and location reference, the four continental landmasses are also included after the list
Islands Islands and greater
Islands
Islands
Islands
Islands
Islands
...
*
List of lakes by area
This is a pair of lists of terrestrial lakes with a surface area of more than approximately , ranked by area, excluding reservoirs and lagoons.
The area of some lakes can vary over time, either seasonally or from year to year. This is especia ...
*
List of islands by population
This is a list of islands in the world ordered by population, which includes all islands with more than 100,000 people. For comparison, continental landmasses are also shown, in italics. The population of the world's islands is over 730 million, ap ...
Notes
References
{{Reflist
Coastal and oceanic landforms
Coastal geography
Lake islands
Lakes
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...
Lists of islands
Recursion