El Ojo () is an

uninhabited The list of uninhabited regions includes a number of places around the globe. The list changes year over year as human beings migrate into formerly uninhabited regions, or migrate out of formerly inhabited regions. Definitions The exact def ...

circular rotating

floating island A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Sometimes referred to as ''tussocks'', ''floatons'', or ''suds'', floating islands are found in many parts of t ...

located within a slightly larger circular lake in the

Paraná Delta The Paraná Delta () is the delta of the Paraná River in Argentina and it consists of several islands known as the Islas del Paraná. The Paraná flows north–south and becomes an alluvial basin (a flood plain) between the Argentine provinces ...

in the

Buenos Aires Province Buenos Aires, officially the Buenos Aires Province, is the largest and most populous Provinces of Argentina, Argentine province. It takes its name from the city of Buenos Aires, the capital of the country, which used to be part of the province an ...

, Argentina.

Description

The island is unique among floating islands as its shape is almost perfectly

circular Circular may refer to: * The shape of a circle * ''Circular'' (album), a 2006 album by Spanish singer Vega * Circular letter (disambiguation), a document addressed to many destinations ** Government circular, a written statement of government pol ...

. As the island is constantly rotating on its own

axis An axis (: axes) may refer to: Mathematics *A specific line (often a directed line) that plays an important role in some contexts. In particular: ** Coordinate axis of a coordinate system *** ''x''-axis, ''y''-axis, ''z''-axis, common names ...

due to the flow of the river beneath it,

shearing Sheep shearing is the process by which the woollen fleece of a sheep is cut off. The person who removes the sheep's wool is called a '' shearer''. Typically each adult sheep is shorn once each year (depending upon dialect, a sheep may be sai ...

occurs around its outer edge, eroding the island into its circular shape, similar to ice disks. The island is currently approximately in diameter, but it is expected to get smaller over time with erosion. It is not yet known how or when the island was formed, with the first known Google Earth imagery being dated 2003. The island was named because of its resemblance to an

eye An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system. In higher organisms, the ey ...

when viewed from above: as the island rotates within its surrounding circular lake, the eye appears to move. The island has been compared to a similarly shaped and rotating floating ice disk phenomenon observed in the

Presumpscot River The Presumpscot River () is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed June 30, 2011 river located in Cumberland County, Maine, United States. It is the main outlet of Sebago ...

near Westbrook,

Maine Maine ( ) is a U.S. state, state in the New England region of the United States, and the northeasternmost state in the Contiguous United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Provinces and ...

. El Ojo was discovered by Argentinian filmmaker Sergio Neuspiller. Research has shown that the island has existed at least since 2003. In 2016, Neuspiller and hydraulic engineer Ricardo Petroni started

crowdfunding Crowdfunding is the practice of funding a project or venture by raising money from a large number of people, typically via the internet. Crowdfunding is a form of crowdsourcing and Alternative Finance, alternative finance, to fund projects "withou ...

an expedition to the island, hoping to perform

scuba diving Scuba diving is a Diving mode, mode of underwater diving whereby divers use Scuba set, breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. The word ''scub ...

, drone data collection, and

soil Soil, also commonly referred to as earth, is a mixture of organic matter, minerals, gases, water, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from ''soil'' by re ...

and

plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with c ...

analysis; however, their fundraising attempts failed, reaching only of their goal. On 10 October 2016,

Kickstarter Kickstarter, PBC is an American Benefit corporation, public benefit corporation based in Brooklyn, New York City, that maintains a global crowdfunding platform focused on creativity. The company's stated mission is to "help bring creative project ...

eventually declared the fundraising campaign unsuccessful.

References

External links

A YouTube video showing the rotation of the island

"El Ojo" video by Sergio Neuspiller
(on

)
El Ojo drone expedition video
{{Authority control Islands of Argentina Floating islands Paraná River Buenos Aires Province