Recursive islands and lakes

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.

Recursive islands

Islands in lakes

Main article: Lake island

Idjwi, in the central-southern region of Lake Kivu

Island	In lake	Country	Area (km2)	Coordinates	Notes
Manitoulin Island	Lake Michigan–Huron	Canada	2,766	45°39′8″N82°06′32″W / 45.65222°N 82.10889°W / 45.65222; -82.10889	Largest lake island in the world [1] [2]
René-Levasseur Island	Manicouagan Reservoir	Canada	2,020	51°23′50″N68°41′30″W / 51.39722°N 68.69167°W / 51.39722; -68.69167	The island is artificial as the lake it is in was made by flooding a smaller existing lake due to the creation of the Daniel-Johnson dam. [3]
Soisalo	spread across several lakes	Finland	1,638	62°28′58″N28°7′53″E / 62.48278°N 28.13139°E / 62.48278; 28.13139	The largest island in continental Finland. It has shores to four different lakes (Kallavesi, Unnukka, Suvasvesi and Kermajärvi), but they are not all at the same level.
Sääminginsalo	Saimaa	Finland	1,090	61°58′58″N29°4′53″E / 61.98278°N 29.08139°E / 61.98278; 29.08139	Separated from one side by an artificial canal (Raikuu canal).
Olkhon Island	Lake Baikal	Russia	730	53°9′24″N107°23′1″E / 53.15667°N 107.38361°E / 53.15667; 107.38361
Isle Royale	Lake Superior	United States	535	48°0′0″N88°55′0″W / 48.00000°N 88.91667°W / 48.00000; -88.91667
Ukerewe Island	Lake Victoria	Tanzania	530	2°1′46″S33°0′36″E / 2.02944°S 33.01000°E / -2.02944; 33.01000
St. Joseph Island	Lake Michigan–Huron	Canada	365	46°13′11″N83°56′47″W / 46.21972°N 83.94639°W / 46.21972; -83.94639
Drummond Island	Lake Michigan–Huron	United States	347	46°0′0″N83°40′0″W / 46.00000°N 83.66667°W / 46.00000; -83.66667
Idjwi	Lake Kivu	DR Congo	340	2°9′58″S29°3′21″E / 2.16611°S 29.05583°E / -2.16611; 29.05583
Kotasaari	Kallavesi	Finland	285	62°52′52″N28°0′23″E / 62.88111°N 28.00639°E / 62.88111; 28.00639	Separated from one side by an artificial canal (Summa canal).
Ometepe	Lake Nicaragua	Nicaragua	276	11°30′0″N85°35′0″W / 11.50000°N 85.58333°W / 11.50000; -85.58333	Made of two conjoined volcanic islands
Zapatera	Lake Nicaragua	Nicaragua	54	11°43′48″N85°49′12″W / 11.73000°N 85.82000°W / 11.73000; -85.82000
Big Island	Lake of the Woods	Canada	~200	61°07′45″N116°45′24″W / 61.12917°N 116.75667°W / 61.12917; -116.75667
Mercer Island	Lake Washington	United States	33.4 [4]	47°34′39″N122°12′43.2″W / 47.57750°N 122.212000°W / 47.57750; -122.212000	Crossed by the Lacey V. Murrow Memorial Bridge, the second longest floating bridge in the world.
Duck Island	Green Lake	United States		47°40′45.9804″N122°20′28.9098″W / 47.679439000°N 122.341363833°W / 47.679439000; -122.341363833
Wizard Island	Crater Lake	United States	1.3	42°56′19″N122°08′44″W / 42.93861°N 122.14556°W / 42.93861; -122.14556	Crater Lake itself is a caldera formed by the eruption of Mount Mazama; a series of smaller eruptions later formed cinder cones on the caldera floor, of which Wizard Island is the highest, and the only one now visible above the lake's surface. [5]
—	Orba Co	China		34°32′44″N81°2′21″E / 34.54556°N 81.03917°E / 34.54556; 81.03917	Highest-elevation islands in the world. There are three islands of quite similar size.
Silcox Island	American Lake	United States		47°07′44″N 122°33′53″W	There are residents that live on this island, there is no ferry service to them.

Islands in lakes on islands

Samosir is in the middle of Lake Toba.

There are nearly 1,000 islands in lakes on islands in Finland alone. ^[6]

Name	In lake	On island	Country	Area (km2)	Coordinates	Notes
Samosir	Lake Toba	Sumatra	Indonesia	630	2°35′0″N98°49′0″E / 2.58333°N 98.81667°E / 2.58333; 98.81667	Largest island in a lake on an island. [1] Manmade from digging canal [note 1]
Gatter Island	Lake Hazen	Ellesmere Island	Canada	0.2	81°55′5″N69°05′35″W / 81.91806°N 69.09306°W / 81.91806; -69.09306
Glover Island	Grand Lake	Newfoundland	Canada	178	48°46′52″N57°41′54″W / 48.78111°N 57.69833°W / 48.78111; -57.69833	Largest naturally occurring island in a lake on an island.
Motutaiko Island	Lake Taupō	North Island	New Zealand	0.11	38°51′17″S175°56′36″E / 38.85472°S 175.94333°E / -38.85472; 175.94333
Goodin Island	Lake Campbell	Fidalgo Island	United States	0.09	48.4384258, -122.6168703
Mokoia Island	Lake Rotorua	North Island	New Zealand	1.35	38°04′50″S176°17′05″E / 38.08056°S 176.28472°E / -38.08056; 176.28472
Rahui Island	Lake Waikareiti	North Island	New Zealand		38°42′45″S177°10′30″E / 38.71250°S 177.17500°E / -38.71250; 177.17500	Largest of several islets in Lake Waikareiti
Mou Waho	Lake Wanaka	South Island	New Zealand	1.2	44°33′10″S169°04′50″E / 44.55278°S 169.08056°E / -44.55278; 169.08056	Largest of several islets in Lake Wanaka, including Stevensons Island
Pigeon Island	Lake Wakatipu	South Island	New Zealand	1.7	44°55′30″S168°23′50″E / 44.92500°S 168.39722°E / -44.92500; 168.39722	Largest of several islets in Lake Wakatipu, including Pig Island / Mātau and Hidden Island
Pomona Island	Lake Manapouri	South Island	New Zealand	2.6	45°30′30″S167°28′30″E / 45.50833°S 167.47500°E / -45.50833; 167.47500	Largest of several islets in Lake Manapouri; largest lake island in New Zealand
Motmot Island	Lake Wisdom	Long Island	Papua New Guinea	0.04	5°21′8″S147°7′2″E / 5.35222°S 147.11722°E / -5.35222; 147.11722
—	West Lake	Brownsea Island	United Kingdom	0.0008	50°41′34″N1°58′21″W / 50.69278°N 1.97250°W / 50.69278; -1.97250
Belle Isle	Windermere	Great Britain	United Kingdom	0.17	54°21′43″N2°56′4″W / 54.36194°N 2.93444°W / 54.36194; -2.93444
Storgrynnan	Vandöfjärden	Fasta Åland	Finland	0.12	60°17′46″N19°55′12″E / 60.29611°N 19.92000°E / 60.29611; 19.92000
—	Senanayaka Samudra	Sri Lanka	Sri Lanka	0.02	7°12′0″N81°31′10″E / 7.20000°N 81.51944°E / 7.20000; 81.51944
Derrywarragh Island	Lough Neagh	Ireland	United Kingdom	0.56	54°30′57″N6°34′11″W / 54.51583°N 6.56972°W / 54.51583; -6.56972
Boa Island	Lower Lough Erne	Ireland	United Kingdom	5.3	54°31′27″N7°47′57″W / 54.5241°N 7.79921°W / 54.5241; -7.79921 [8]	Largest lake island of the United Kingdom and inland island of Ireland
Sveta Marija	Veliko jezero	Mljet	Croatia	0.017	42°46′8″N17°21′37″E / 42.76889°N 17.36028°E / 42.76889; 17.36028
Chikubu Island	Lake Biwa	Honshu	Japan	0.14	35°25′20″N136°8′37″E / 35.42222°N 136.14361°E / 35.42222; 136.14361
Takeshima	Lake Biwa	Honshu	Japan	0.6	35°17′47″N136°10′41″E / 35.29639°N 136.17806°E / 35.29639; 136.17806
Okishima	Lake Biwa	Honshu	Japan	1.51	35°12′28″N136°3′58″E / 35.20778°N 136.06611°E / 35.20778; 136.06611	Largest of the three islands located within Lake Biwa, which is Japan's largest lake.
Nakajima (Lake Kussharo)	Lake Kussharo	Hokkaido	Japan	5.81	43°37′56″N144°18′20″E / 43.63222°N 144.30556°E / 43.63222; 144.30556	Largest recursive island in Japan
Nakajima (Lake Toya)	Lake Tōya	Hokkaido	Japan	4.84	42°36′07″N140°51′11″E / 42.60194°N 140.85306°E / 42.60194; 140.85306
Takeshima	Lake Biwa	Honshu	Japan	0.6	35°17′47″N136°10′41″E / 35.29639°N 136.17806°E / 35.29639; 136.17806
Okinajima	Lake Inawashiro	Honshu	Japan	0.07	37°30′33″N140°02′15″E / 37.50917°N 140.03750°E / 37.50917; 140.03750
Loeha Island	Lake Towuti	Sulawesi	Indonesia	12.5	2°46′22″S121°32′51″E / 2.77278°S 121.54750°E / -2.77278; 121.54750
Lalu Island	Sun Moon Lake	Nantou	Taiwan	0.882	23°51′20″N120°54′40″E / 23.85556°N 120.91111°E / 23.85556; 120.91111
Yufei Island	Qingcao Lake	Hsinchu	Taiwan	0.00425	24°46′29″N120°58′18″E / 24.77472°N 120.97167°E / 24.77472; 120.97167
—	Kasegalik Lake	Flaherty Island	Canada			There are several other islands in that lake.
Isla Cabritos	Lago Enriquillo	Hispaniola	Dominican Republic	16.67	18°29′21″N71°40′55″W / 18.48917°N 71.68194°W / 18.48917; -71.68194
—	—	Cat Ba Island	Vietnam	0.0005	20°46′54″N107°5′30″E / 20.78167°N 107.09167°E / 20.78167; 107.09167	There is a smaller one, right at the south of it.
—	Blöndulón	Iceland	Iceland			There are nine other islands in this lake, all significantly smaller than this one.
—	—	Great Britain	United Kingdom	0.14	51°53′45″N0°54′35″E / 51.89583°N 0.90972°E / 51.89583; 0.90972	Occasionally referred to as "Castle Park Island"

Islands in lakes on islands in lakes

Name	In lake	On island	In lake	Country	Area (km2)	Coordinates	Notes
Kokkosaari [9]	Kokkohauta	Sääminginsalo	Saimaa	Finland	0.88	61°59′20″N29°12′55″E / 61.98889°N 29.21528°E / 61.98889; 29.21528	Claimed to be the world's largest island in a lake on an island in a lake. Another island, Suursaari ( 62°5′28″N28°59′28″E / 62.09111°N 28.99111°E / 62.09111; 28.99111 ) in Hanhijärvi, is also located in Sääminginsalo, and is about half the size of Kokkosaari. Separated by an artificial canal, Sääminginsalo might not be considered an island.
—	Lake Chaunoy (Lac du Chaunoy) [10]	René-Levasseur Island	Manicouagan Reservoir	Canada	0.44	51°33′5″N68°49′8″W / 51.55139°N 68.81889°W / 51.55139; -68.81889	René-Levasseur Island is an artificial island, formed when the Manicouagan reservoir was flooded in 1970. There are also more than 10 other smaller islands in Lake Chaunoy, the largest of which is less than a tenth of the size of the one listed here.
Treasure Island	Lake Mindemoya	Manitoulin Island	Lake Michigan–Huron	Canada	0.4	45°45′50″N82°10′41″W / 45.76389°N 82.17806°W / 45.76389; -82.17806	Largest natural island on a lake on an island on a lake.
Kakawaie Island	Lake Kagawong	Manitoulin Island	Lake Michigan–Huron	Canada	0.24	45°48′45″N82°18′22″W / 45.81250°N 82.30611°W / 45.81250; -82.30611
Ryan Island [11]	Siskiwit Lake	Isle Royale	Lake Superior	United States	0.141	48°0′36″N88°46′15″W / 48.01000°N 88.77083°W / 48.01000; -88.77083	Largest island in the largest lake on the largest island in the largest lake in the world (Lake Superior)
—	Second Lake	Drummond Island	Lake Michigan–Huron	United States	0.044	46°03′2″N83°35′55″W / 46.05056°N 83.59861°W / 46.05056; -83.59861
— [12]	Mackaysee Lake	Chambers Island	Green Bay, Lake Michigan	United States	0.009	45°11′41″N87°20′43″W / 45.19472°N 87.34528°W / 45.19472; -87.34528
—	Frith Lake	Kelvin Island	Lake Nipigon	Canada	0.0013	49°52′29″N88°40′53″W / 49.87472°N 88.68139°W / 49.87472; -88.68139
Piiroonsaari [9]	Saravesi	Kotasaari	Kallavesi	Finland	0.22	62°50′41″N28°4′36″E / 62.84472°N 28.07667°E / 62.84472; 28.07667	Separated by an artificial canal, Kotasaari might not be considered an island.
Suurisaari [9]	Oininki	Äitsaari	Saimaa	Finland	0.14
Ukonsaari [9]	Kulkemus	Partalansaari	Pihlajavesi (Saimaa)	Finland	0.12	61°40′9″N28°23′43″E / 61.66917°N 28.39528°E / 61.66917; 28.39528
—	Lake Cancy	René-Levasseur Island	Manicouagan Reservoir	Canada	0.011	51°33′21″N68°50′52″W / 51.55583°N 68.84778°W / 51.55583; -68.84778
—	Lac des Pigamons	Îlots Walcott	Lake Mistassini	Canada	0.0002	51°07′18″N73°21′34″W / 51.12167°N 73.35944°W / 51.12167; -73.35944
—	—	Wilson Island	Great Slave Lake	Canada	0.011	61°50′7″N112°46′57″W / 61.83528°N 112.78250°W / 61.83528; -112.78250
Raaskasaari	Kylliönjärvi	Viljakansaari	Pihlajavesi (Saimaa)	Finland	0.05	61°33′53″N28°22′56″E / 61.56472°N 28.38222°E / 61.56472; 28.38222
—	—	Kållandsö	Vänern	Sweden	0.0027	58°41′52″N13°11′18″E / 58.69778°N 13.18833°E / 58.69778; 13.18833	There is a second island in the lake, almost the exact same size
Ösjöholmen	Ösjön	Ammerön	Revsundssjön	Sweden	0.008	62°51′57″N15°10′23″E / 62.86583°N 15.17306°E / 62.86583; 15.17306
—	—	Tynnelsö	Mälaren	Sweden	0.0005	59°25′1″N17°04′44″E / 59.41694°N 17.07889°E / 59.41694; 17.07889
—	—	—	Lake Kovdozero	Russia	0.0162	66°45′23″N31°58′37″E / 66.75639°N 31.97694°E / 66.75639; 31.97694
—	—	Shaganappie Island	Wollaston Lake	Canada	0.0066	58°22′22″N102°57′51″W / 58.37278°N 102.96417°W / 58.37278; -102.96417
—	Calder Lake	Malcolm Island	Reindeer Lake	Canada	0.0154	56°58′24″N102°8′1″W / 56.97333°N 102.13361°W / 56.97333; -102.13361
—	—	Ispatinow Island	Cree Lake	Canada	0.00019	57°27′40″N106°40′47″W / 57.46111°N 106.67972°W / 57.46111; -106.67972
—	—	Blanchet Island	Great Slave Lake	Canada	0.01	61°59′40″N112°30′56″W / 61.99444°N 112.51556°W / 61.99444; -112.51556	Several small islands in this lake
—	Vanooyen Lake	Shakespeare Island	Lake Nipigon	Canada	0.0182	49°39′36″N88°24′10″W / 49.66000°N 88.40278°W / 49.66000; -88.40278	There is a second, smaller island in this lake.
—	Margaret Lake	Elk Island	God's Lake	Canada	0.00095	54°39′32″N94°10′44″W / 54.65889°N 94.17889°W / 54.65889; -94.17889	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.0006	54°39′29″N94°10′37″W / 54.65806°N 94.17694°W / 54.65806; -94.17694	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.0002	54°39′29″N94°10′34″W / 54.65806°N 94.17611°W / 54.65806; -94.17611	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.00015	54°39′29″N94°10′33″W / 54.65806°N 94.17583°W / 54.65806; -94.17583	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.00002–5	54°39′29″N94°10′39″W / 54.65806°N 94.17750°W / 54.65806; -94.17750	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.00004–10	54°39′26″N94°10′44″W / 54.65722°N 94.17889°W / 54.65722; -94.17889	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.000015-50	54°39′27″N94°10′31″W / 54.65750°N 94.17528°W / 54.65750; -94.17528	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.000005-20	54°39′32″N94°10′25″W / 54.65889°N 94.17361°W / 54.65889; -94.17361	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.000005–20	54°39′36″N94°10′36″W / 54.66000°N 94.17667°W / 54.66000; -94.17667	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.000005-20	54°39′43″N94°11′03″W / 54.66194°N 94.18417°W / 54.66194; -94.18417	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.000005–20	54°39′42″N94°11′05″W / 54.66167°N 94.18472°W / 54.66167; -94.18472	Several small islands in this lake
–	Margaret Lake	Elk Island	God's Lake	Canada	~0.000001–5	54°39′43″N94°10′57″W / 54.66194°N 94.18250°W / 54.66194; -94.18250	Several small islands in this lake
—	—	Ile Guillaume Couture	Lac Mistassini	Canada	0.0017	50°55′1″N73°37′32″W / 50.91694°N 73.62556°W / 50.91694; -73.62556
—	—	Ile Tchapahipane	Lac Mistassini	Canada	0.00125	51°4′34″N73°25′25″W / 51.07611°N 73.42361°W / 51.07611; -73.42361
—	—	Pie Island	Lac Mistassini	Canada	0.0086	48°13′58″N89°3′26″W / 48.23278°N 89.05722°W / 48.23278; -89.05722	Two islands of similar size are in this lake
—	Muir Lake	St Ignace Island	Lake Superior	Canada	0.00325	48°48′28″N88°2′3″W / 48.80778°N 88.03417°W / 48.80778; -88.03417
—	Antler Lake	St Ignace Island	Lake Superior	Canada	0.0041	48°48′59″N88°0′5″W / 48.81639°N 88.00139°W / 48.81639; -88.00139	Two islands of similar size are in this lake
—	Williamson Lake	St Ignace Island	Lake Superior	Canada	0.00425	48°48′4″N88°1′39″W / 48.80111°N 88.02750°W / 48.80111; -88.02750
—	Molinski Lake	Simpson Island	Lake Superior	Canada	0.01	48°49′13″N87°42′51″W / 48.82028°N 87.71417°W / 48.82028; -87.71417
—	Caribou Lake	Simpson Island	Lake Superior	Canada	0.00465	48°45′51″N87°39′33″W / 48.76417°N 87.65917°W / 48.76417; -87.65917
—	Veronica Lake	Slate Islands	Lake Superior	Canada	0.0065	48°39′28″N86°59′23″W / 48.65778°N 86.98972°W / 48.65778; -86.98972
—	Michi Lake	Michipicoten Island	Lake Superior	Canada	0.0037	47°44′28″N85°54′29″W / 47.74111°N 85.90806°W / 47.74111; -85.90806	There are three islands in total in this lake
—	Channel Lake	Michipicoten Island	Lake Superior	Canada	0.0084	47°43′50″N85°48′0″W / 47.73056°N 85.80000°W / 47.73056; -85.80000	A second, smaller island is immediately to the west of this one.
—	—	—	Knielinger See	Germany	0.0003	49°01′52.5″N8°18′34.3″E / 49.031250°N 8.309528°E / 49.031250; 8.309528
—	—	Wizard Island	Crater Lake	United States
—	Lac Civic	Île Bronson	Réservoir Cabonga	Canada			There are other islands in lakes on islands in Cabonga.
–	–	–	Dubawnt Lake	Canada		63°15′36″N101°08′08″W / 63.26000°N 101.13556°W / 63.26000; -101.13556	Viewable on Google Earth only. As of 10 July 2024 (according to Google Earth data), the island did not collide with its island.
–	–	Xishan Island	Lake Tai	China		31°8′31.25″N120°20′30.17″E / 31.1420139°N 120.3417139°E / 31.1420139; 120.3417139	Two small islands. The unnamed lake together with the other two surrounding lakes, is collectively called '无机坑 (wújīkēng)' and is the site of a former quarry.

Islands in lakes on islands in lakes on islands

Nameless isle within Victoria Island in Nunavut Territory in Canada

Name	In lake	On island	In lake	On island	Country	Area (m2)	Coordinates	Notes
—	—	—	Nettilling Lake	Baffin Island	Canada	40,000	66°41′15″N70°28′48″W / 66.68750°N 70.48000°W / 66.68750; -70.48000	There are more islands in lakes on the 'level 2' island in Nettling Lake.
—	—	—	—	Victoria Island	Canada	16,000	69°47′32″N108°14′26″W / 69.79222°N 108.24056°W / 69.79222; -108.24056	Sometimes unofficially referred to as Inception Island.[ citation needed ]
—	Aek Natonang (Locally Sidihoni Lake [14] )	Samosir	Lake Toba	Sumatra	Indonesia	13,125	2°33′52″N98°53′0″E / 2.56444°N 98.88333°E / 2.56444; 98.88333	Two islands, the largest of which is 175 m by 75 m.
—	—	—	—	King William Island	Canada	12,000	69°27′39″N97°35′43″W / 69.46083°N 97.59528°W / 69.46083; -97.59528	One circular island, which is around 120m in diameter
—	—	Glover Island	Grand Lake	Newfoundland	Canada	7,500	48°47′48″N57°39′28″W / 48.79667°N 57.65778°W / 48.79667; -57.65778	There are several (at least seven) other, even smaller, islets in the lake
—	—	—	—	Baffin Island	Canada	3,000	64°47′32″N75°25′11″W / 64.79222°N 75.41972°W / 64.79222; -75.41972	One circular island, which is around 60m in diameter
—	—	Glover Island	Grand Lake	Newfoundland	Canada	2,300	48°43′8″N57°46′23″W / 48.71889°N 57.77306°W / 48.71889; -57.77306	In a lake 11 km south west to the lake that contains the larger island. There are no other island in this island's lake
—	—	—	Meelpaeg Reservoir	Newfoundland	Canada	100	48°18′44″N56°30′48″W / 48.31222°N 56.51333°W / 48.31222; -56.51333	There are 3 other smaller islands in the same lake.
—	Arethusa Pool	Mou Waho	Lake Wānaka	South Island	New Zealand	225	44°33′15″S169°05′3″E / 44.55417°S 169.08417°E / -44.55417; 169.08417	There are two islands in this lake, both less than 25 m across.
—	—	Eilean Sùbhainn	Loch Maree	Great Britain	United Kingdom	225	57°41′24″N5°29′9″W / 57.69000°N 5.48583°W / 57.69000; -5.48583	Two islets, each of which is 15m by 15m
—	—	—	Kooryet Lake	Banks Island (British Columbia)	Canada	~100	53°21′7″N129°59′30″W / 53.35194°N 129.99167°W / 53.35194; -129.99167	A number of small islets, the largest of which is only 10m across
—	—	Samosir	Lake Toba	Sumatra	Indonesia	400	2°38′11″N98°50′14″E / 2.63639°N 98.83722°E / 2.63639; 98.83722
—	—	Ostrov Litvinova	Ozero Nevskoye	Sakhalin	Russia	50	49°19′17″N143°37′30″E / 49.32139°N 143.62500°E / 49.32139; 143.62500	There is (at least) one smaller island in the same lake
—	—	—	Jubilee Lake	Newfoundland	Canada	20	48°3′50″N55°10′24″W / 48.06389°N 55.17333°W / 48.06389; -55.17333	Several small islets, the largest of which is about 5 m across
—	—	Cayo pajaro	Laguna de Leche	Cuba	Cuba	832	22°13′31″N78°40′2″W / 22.22528°N 78.66722°W / 22.22528; -78.66722	There are several other islets in the lake, all about half the area of the specified islet.
Vulcan Point [15] [16]	Main Crater Lake	Volcano Island [17]	Lake Taal	Luzon	Philippines		14°00′35″N120°59′54″E / 14.00972°N 120.99833°E / 14.00972; 120.99833
—	—	—	Hatchet Lake	Adak Island	United States		51°43'49.1"N 176°45'31.2"W

Islands in lakes on islands in lakes on islands in lakes

Name	In lake	On island	In lake	On island	In lake	Country	Size (km2)	Coordinates	Notes
—	—	—	—	—	Lake Yathkyed	Canada	—	62°39′05″N97°47′15″W / 62.65139°N 97.78750°W / 62.65139; -97.78750	[18] [19]

Recursive lakes

Lakes on islands

Lake Alaotra region, Madagascar

Name	On island	Country	Size (km2)	Coordinates	Notes
Nettilling Lake	Baffin Island	Canada	5,542	66°29′N 70°20′W
Lake Alaotra	Madagascar	Madagascar	900	17.5°S 48.5°E
Laguna de Leche	Cuba	Cuba	67.2	22°12′33″N78°37′17″W / 22.20917°N 78.62139°W / 22.20917; -78.62139
Lough Neagh	Island of Ireland	Northern Ireland/United Kingdom	392	54°37′06″N6°23′43″W / 54.61833°N 6.39528°W / 54.61833; -6.39528
Lough Corrib	Island of Ireland	Republic of Ireland	176	53°26′N 9°14′W
Loch Lomond	Great Britain	Scotland/United Kingdom	71	56°05′N 4°34′W
Lake Kawaguchi	Honshu	Japan	6.13	35°30′56″N138°45′36″E / 35.51556°N 138.76000°E / 35.51556; 138.76000	The largest among the Fuji Five Lakes
Þingvallavatn	Iceland	Iceland	84	64°11′N 21°09′W
Lake Taupō	North Island	New Zealand	616	38°48′25″S175°54′28″E / 38.80694°S 175.90778°E / -38.80694; 175.90778
Lake Wakatipu	South Island	New Zealand	289	45°03′S168°30′E / 45.050°S 168.500°E / -45.050; 168.500
Lake Biwa	Honshu	Japan	670	35°20′N 136°10′E	Largest lake in Japan
Lake Toba	Sumatra	Indonesia	1130	2°40′48″N98°52′48″W / 2.68000°N 98.88000°W / 2.68000; -98.88000
Lake Ranau	Sumatra	Indonesia	126	4°51′45″S103°55′50″E / 4.86250°S 103.93056°E / -4.86250; 103.93056
Lake Singkarak	Sumatra	Indonesia	108	0°37′12″S100°32′24″E / 0.62000°S 100.54000°E / -0.62000; 100.54000
Lake Towuti	Sulawesi	Indonesia	561	2°45′0″S121°30′0″E / 2.75000°S 121.50000°E / -2.75000; 121.50000
Lake Poso	Sulawesi	Indonesia	323	1°55′28″S120°37′0″E / 1.92444°S 120.61667°E / -1.92444; 120.61667
Lake Matano	Sulawesi	Indonesia	164	2°29′7″S121°20′0″E / 2.48528°S 121.33333°E / -2.48528; 121.33333

Lakes on islands in lakes

Tourists on Laguna del Volcan Maderas on Ometepe Island in Lake Nicaragua

Name	On island	In lake	Country	Size (km2)	Coordinates	Notes
Lake Manitou	Manitoulin Island	Lake Michigan–Huron	Canada	106	45°46′42″N81°59′30″W / 45.77833°N 81.99167°W / 45.77833; -81.99167
Lac Observation	René-Levasseur Island	Manicouagan Reservoir	Canada	13.5 [20]	51°21′42″N68°49′12″W / 51.36167°N 68.82000°W / 51.36167; -68.82000
Ylä-Enonvesi [9]	Sääminginsalo	Saimaa	Finland	12	62°3′7″N29°0′12″E / 62.05194°N 29.00333°E / 62.05194; 29.00333	Includes Lake Saarijärvi that forms its southern part. Separated by an artificial canal, Sääminginsalo might not be considered an island.
Kulkemus [9]	Partalansaari	Pihlajavesi (Saimaa)	Finland	5.8	61°40′43″N28°24′13″E / 61.67861°N 28.40361°E / 61.67861; 28.40361
Saajuu-Palovesi [9]	Partalansaari	Pihlajavesi (Saimaa)	Finland	4.1	61°41′55″N28°19′34″E / 61.69861°N 28.32611°E / 61.69861; 28.32611
Saravesi [9]	Kotasaari	Kallavesi	Finland	4.1	62°50′49″N28°4′52″E / 62.84694°N 28.08111°E / 62.84694; 28.08111	Separated by an artificial canal, Kotasaari might not be considered an island.
Oininki [9]	Äitsaari	Saimaa	Finland	2.6	61°18′52″N28°38′21″E / 61.31444°N 28.63917°E / 61.31444; 28.63917
Malosenjärvi [9]	Viljakansaari	Pihlajavesi (Saimaa)	Finland	1.4	61°31′58″N28°16′11″E / 61.53278°N 28.26972°E / 61.53278; 28.26972
Valkiajärvi [9]	Hurissalo	Saimaa	Finland	1.4	61°30′27″N27°49′29″E / 61.50750°N 27.82472°E / 61.50750; 27.82472
Ruokojärvi [9]	Partalansaari	Pihlajavesi (Saimaa)	Finland	1.3	61°38′1″N28°23′39″E / 61.63361°N 28.39417°E / 61.63361; 28.39417
Närtejärvi [9]	Viljakansaari	Pihlajavesi (Saimaa)	Finland	1.2	61°34′31″N28°31′8″E / 61.57528°N 28.51889°E / 61.57528; 28.51889
Kylliönjärvi [9]	Viljakansaari	Pihlajavesi (Saimaa)	Finland	1.1	61°33′47″N28°22′59″E / 61.56306°N 28.38306°E / 61.56306; 28.38306
Lapinjärvi [9]	Hurissalo	Saimaa	Finland	1.1	61°29′33″N27°48′30″E / 61.49250°N 27.80833°E / 61.49250; 27.80833
Shara-Nur [21]	Olkhon Island	Lake Baikal	Russia		53°06′18″N107°15′16″E / 53.10500°N 107.25444°E / 53.10500; 107.25444
Siskiwit Lake	Isle Royale	Lake Superior	United States	16.8	48°00′05″N088°47′50″W / 48.00139°N 88.79722°W / 48.00139; -88.79722
Lake Desor [22]	Isle Royale	Lake Superior	United States		47°58′36″N88°59′13″W / 47.97667°N 88.98694°W / 47.97667; -88.98694
Lake Richie [23]	Isle Royale	Lake Superior	United States		48°2′38″N88°41′43″W / 48.04389°N 88.69528°W / 48.04389; -88.69528
Lake Mindemoya	Manitoulin Island	Lake Michigan–Huron	Canada	38.7	45°45′43″N82°12′32″W / 45.76194°N 82.20889°W / 45.76194; -82.20889
Lake Kagawong	Manitoulin Island	Lake Michigan–Huron	Canada	55.6	45°50′0″N82°18′36″W / 45.83333°N 82.31000°W / 45.83333; -82.31000
Little Lake	Washington Island	Lake Michigan	United States	0.17	45°24′36″N86°56′29″W / 45.41000°N 86.94139°W / 45.41000; -86.94139
Lake Windigo	Star Island	Cass Lake (Minnesota)	United States	0.8	47°25′7″N94°34′13″W / 47.41861°N 94.57028°W / 47.41861; -94.57028
Fox Lagoon	Pelee island	Lake Erie	Canada	0.02	41°43′57″N82°40′18″W / 41.73250°N 82.67167°W / 41.73250; -82.67167
Lake Henry	Pelee island	Lake Erie	Canada	0.345	41°49′32″N82°38′20″W / 41.82556°N 82.63889°W / 41.82556; -82.63889
Laguna del Volcan Maderas [24]	Ometepe	Lake Nicaragua	Nicaragua	0.034	11°26′42″N85°30′38″W / 11.44500°N 85.51056°W / 11.44500; -85.51056
Laguna de Zapatera [25]	Zapatera	Lake Nicaragua	Nicaragua	0.19	11°45′59″N85°51′25″W / 11.76639°N 85.85694°W / 11.76639; -85.85694
Antoniyevskoye Lake	Valaam	Lake Ladoga	Russia	0.028	61°23′18″N30°59′48″E / 61.38833°N 30.99667°E / 61.38833; 30.99667
Ozero Leshchevo	Valaam	Lake Ladoga	Russia	0.27	61°21′35″N30°55′58″E / 61.35972°N 30.93278°E / 61.35972; 30.93278
Lake Geneserath	Beaver Island	Lake Michigan–Huron	United States	2	45°35′55″N85°32′23″W / 45.59861°N 85.53972°W / 45.59861; -85.53972
Ösjön	Ammerön	Revsundssjön	Sweden	0.58	62°51′53″N15°10′21″E / 62.86472°N 15.17250°E / 62.86472; 15.17250
Igelviken	Färingsö	Mälaren	Sweden	0.47	59°21′53″N17°42′13″E / 59.36472°N 17.70361°E / 59.36472; 17.70361
Ändsjön	Frösön	Storsjön	Sweden	0.32	63°10′34″N14°34′24″E / 63.17611°N 14.57333°E / 63.17611; 14.57333
Gråtjønna	Røssvassholmen	Røssvatnet	Norway	0.05	65°41′46″N13°59′47″E / 65.69611°N 13.99639°E / 65.69611; 13.99639
—	—	Lake Chad	Cameroon			There is another, smaller lake on that island. There are a few more islands in Lake Chad that have a lake on them.
Süvähaud	Piirissaar	Peipus	Estonia
—	—	Thac Ba Reservoir	Vietnam	0.05	21°50'24.7"N 104°58'02.5"E	There are some extremely tiny islets in that lake.

Lakes on islands in lakes on islands

View across Arethusa Pool (foreground) on Mou Waho Island to Lake Wānaka, New Zealand

Name	On island	In lake	On island	Country	Size (km2)	Coordinates	Notes
—	—	Nettilling Lake	Baffin Island	Canada	1.55	66°23′15″N69°38′41″W / 66.38750°N 69.64472°W / 66.38750; -69.64472
—	Glover Island	Grand Lake	Newfoundland	Canada	1.40	48°48′9″N57°39′41″W / 48.80250°N 57.66139°W / 48.80250; -57.66139
Arethusa Pool	Mou Waho	Lake Wānaka	South Island	New Zealand	0.05	44°33′15″S169°05′00″E / 44.55417°S 169.08333°E / -44.55417; 169.08333
—	Rahui Island	Lake Waikareiti	North Island	New Zealand	0.003	38°42′45″S177°10′22″E / 38.71250°S 177.17278°E / -38.71250; 177.17278
—	—	Jubilee Lake	Newfoundland	Canada	0.025	48°3′50″N55°10′24″W / 48.06389°N 55.17333°W / 48.06389; -55.17333
—	—	Mölnorträsk	Fårö	Sweden	0.00006	57°55′45″N19°08′29″E / 57.92917°N 19.14139°E / 57.92917; 19.14139	Extremely small
—	—	—	Baffin Island	Canada		70°41′14″N80°34′18″W / 70.68722°N 80.57167°W / 70.68722; -80.57167
Molemole	Motu'a'ali	Motu Si'i	Niuafo'ou	Tonga	0.02	15°35′42″S175°38′57″W / 15.594888°S 175.649157°W / -15.594888; -175.649157
—	Sandey	Þingvallavatn	Iceland	Iceland
—	Gatter Lake	Lake Hazen	Ellesmere Island	Canada			Northernmost lake of its kind in the world.
—	Teinholmen	Vestrevatnet	Osterøy	Norway		60°32′12″N5°37′38″E / 60.536628°N 5.627209°E / 60.536628; 5.627209

Lakes on islands in lakes on islands in lakes

Name	On island	In lake	On island	In lake	Country	Size (km2)	Coordinates	Notes
—	—	—	—	Lake Yathkyed	Canada	0.013	62°39′5.8″N97°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. [19]

See also

• Geography portal
• Islands portal
• Lakes portal

• List of endorheic basins
• Volcanic crater lake
• List of islands by area
• List of lakes by area
• List of islands by population

Notes

1. Was a peninsula until 1906 when a canal was dug, separating it from the mainland. ^[7]

References

1. Records, Guinness World (August 28, 2018). 2019 Guinness World Records. pp. 40–41. ISBN   978-1-912286-43-0.
2. 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.
3. 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
4. "2019 U.S. Gazetteer Files". United States Census Bureau. Retrieved August 7, 2020.
5. "Crater Lake, Oregon". NASA Earth Observatory. September 18, 2006.
6. "Suomen saaristo- ja vesistömatkailusta" (PDF). valtioneuvosto.fi / Julkaisut. Archived from the original (PDF) on January 21, 2022. Retrieved August 17, 2020.
7. "Samosir Island - Everything you Need to Know about Samosir Island".
8. Boa Island Placenames Database of Ireland
9. Shoreline - lakes (Ranta10), 2020. Finnish Environment Centre, ELY centres. Released under CC-BY-4.0.
10. "Lac Du Chaunoy, Quebec Map". geodata.us.
11. "GNIS Detail - Ryan Island". geonames.usgs.gov.^{[ permanent dead link ]}
12. "Islands within Chambers Island's Lake Mackaysee Now Protected by Door County Land Trust". November 8, 2018.
13. "Island in a Lake on an Island in a Lake on an Island". earthobservatory.nasa.gov. February 22, 2015. Retrieved March 13, 2020.
14. "Aek Natonang Lake – A Sub-Lake of Pangururan". www.toba.indonesia-tourism.com. Retrieved August 12, 2020.
15. Freedman, Andrew; Meko, Tim; Karklis, Laris (January 17, 2020). "Taal volcano's crater lake is nearly empty". Washington Post.
16. "Some interesting islands and lakes". Topografisch Verbond Elbruz. Archived from the original on September 19, 2013. Retrieved February 1, 2014.
17. "Volcano Island | volcano, Philippines". Encyclopedia Britannica.
18. , 62°39′05″ N, 97°47′15″ W
19. 1 2 "Did you know? Canada is home to the world's most 'recursive' island". Curiocity. February 25, 2022.
21. "Shara-Nur lake". BaikalNature Tour Operator. May 11, 1975. Retrieved March 13, 2020.
22. "GNIS Detail - Lake Desor". geonames.usgs.gov. Archived from the original on April 19, 2021. Retrieved March 13, 2020.
23. "GNIS Detail - Lake Richie". geonames.usgs.gov. Archived from the original on April 19, 2021. Retrieved March 13, 2020.
24. 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.
25. "Global Volcanism Program | Zapatera". Smithsonian Institution | Global Volcanism Program.