From Wikipedia, the free encyclopedia
Island or lake that is itself within an island or lake
A recursive island or lake, also known as a nested island or lake, is an island or a lake that lies within a lake or an island.[1] For the purposes of defining recursion, small continental land masses such as Madagascar and New Zealand count as islands, while large continental land masses such as Australia do not. Islands found within lakes in these countries are often recursive islands because the lake itself is located on an island.

Islands in lakes on islands
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There are nearly 1,000 islands in lakes on islands in Finland alone.[8]
Islands in lakes on islands in lakes
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Islands in lakes on islands in lakes on islands
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Islands in lakes on islands in lakes on islands in lakes
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| Name | In lake | On island | In lake | On island | In lake | Country | Size (km2) | Coordinates | Notes |
|---|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | Lake Yathkyed | Canada | — | 62°39′05″N 97°47′15″W / 62.65139°N 97.78750°W / 62.65139; -97.78750 | [21][22] |

Lakes on islands in lakes
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Lakes on islands in lakes on islands
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Lakes on islands in lakes on islands in lakes
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| Name | On island | In lake | On island | In lake | Country | Size (km2) | Coordinates | Notes |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | Lake Yathkyed | Canada | 0.013 | 62°39′5.8″N 97°47′11.8″W / 62.651611°N 97.786611°W / 62.651611; -97.786611 | There is, even further, an island in that lake, making it the only such island in the world that has been discovered.[22] |
- List of endorheic basins
- Volcanic crater lake
- List of islands by area
- List of lakes by area
- List of islands by population
- ^ a b c Records, Guinness World (August 28, 2018). 2019 Guinness World Records. pp. 40–41. ISBN 978-1-912286-43-0.
- ^ Arsene Mushagalusa Balasha; et al. (2023). "Pesticide Choice and Use Patterns Among Vegetable Farmers on Idjwi Island, Eastern Democratic Republic of Congo". SAGE Open. SAGE Publishing. Retrieved December 10, 2025.
- ^ Wolchover, Natalie (January 24, 2012). "World's Largest Island-in-a-lake-on-an-island-in-a-lake-on-an-island Seen on Google Earth". livescience.com.
- ^ Québec (ministère de l’Environnement) (April 2003), "La réserve de biodiversité projetée de l'île René-Levasseur" (PDF), Bureau d'audiences publiques sur l'environnement (in French), Quebec City, p. 14, retrieved August 19, 2010
- ^ "2019 U.S. Gazetteer Files". United States Census Bureau. Retrieved August 7, 2020.
- ^ "Crater Lake, Oregon". NASA Earth Observatory. September 18, 2006.
- ^ "Samosir | Location, Batak, & Facts | Britannica". Encyclopædia Britannica. Archived from the original on March 20, 2025. Retrieved December 9, 2025.
- ^ "Suomen saaristo- ja vesistömatkailusta" (PDF). valtioneuvosto.fi / Julkaisut. Archived from the original (PDF) on January 21, 2022. Retrieved August 17, 2020.
- ^ "Samosir Island - Everything you Need to Know about Samosir Island".
- ^ Boa Island Placenames Database of Ireland
- ^ a b c d e f g h i j k l m n o Shoreline - lakes (Ranta10), 2020. Finnish Environment Centre, ELY centres. Released under CC-BY-4.0.
- ^ "Lac Du Chaunoy, Quebec Map". geodata.us.
- ^ "GNIS Detail - Ryan Island". geonames.usgs.gov.[permanent dead link]
- ^ "Islands within Chambers Island's Lake Mackaysee Now Protected by Door County Land Trust". November 8, 2018.
- ^ "Island in a Lake on an Island in a Lake on an Island". earthobservatory.nasa.gov. February 22, 2015. Retrieved March 13, 2020.
- ^ Nadis, Steve (October 31, 2025). "In a First, AI Models Analyze Language As Well As a Human Expert". Quanta Magazine. Retrieved December 9, 2025.
- ^ "Aek Natonang Lake – A Sub-Lake of Pangururan". www.toba.indonesia-tourism.com. Retrieved August 12, 2020.
- ^ Freedman, Andrew; Meko, Tim; Karklis, Laris (January 17, 2020). "Taal volcano's crater lake is nearly empty". Washington Post.
- ^ "Some interesting islands and lakes". Topografisch Verbond Elbruz. Archived from the original on September 19, 2013. Retrieved February 1, 2014.
- ^ "Volcano Island | volcano, Philippines". Encyclopedia Britannica.
- ^ [1], 62°39′05″ N, 97°47′15″ W
- ^ a b "Did you know? Canada is home to the world's most 'recursive' island". Curiocity. February 25, 2022.
- ^ [2]
- ^ "Shara-Nur lake". BaikalNature Tour Operator. May 11, 1975. Retrieved March 13, 2020.
- ^ "GNIS Detail - Lake Desor". geonames.usgs.gov. Archived from the original on April 19, 2021. Retrieved March 13, 2020.
- ^ "GNIS Detail - Lake Richie". geonames.usgs.gov. Archived from the original on April 19, 2021. Retrieved March 13, 2020.
- ^ Valenzuela, Orlando. "Puerta laguna misteriosa [Door to mysterious lagoon]". El Nuevo Diario (in Spanish). Archived from the original on July 8, 2020. Retrieved March 13, 2020.
- ^ "Global Volcanism Program | Zapatera". Smithsonian Institution | Global Volcanism Program.