Prehistory The island is believed to have been uninhabited by humans prior to European discovery. However, there has been little archaeological investigation into
oceanic eastern Pacific islands, including Cocos Island. Likewise,
Indigenous Americans on the west coast of the continent were not known to inhabit any remote eastern Pacific islands. In 2008, Cocos Island, the
Desventuradas Islands,
Galápagos Islands and
Juan Fernández Islands (all uninhabited when discovered by Europeans) were surveyed by archaeologists from the
Australian National University. Their investigation found that the Galápagos Islands may have been visited by a Polynesian vessel, but it is unclear what their findings were for Cocos Island.
Gonzalo Fernández de Oviedo y Valdés discusses the discovery of the island by his contemporary, Spanish navigator Juan de Cabezas (also known as Juan de Grado), in 1526. D. Lievre,
Una isla desierta en el Pacífico; la isla del Coco in
Los viajes de Cockburn y Lievre por Costa Rica (1962: 134) tells that the first document with the name "Isle de Coques" is a map painted on
parchment, called that of
Henry II, that appeared in 1542 during the reign of
Francis I of France. The
planisphere of Nicolas Desliens (1556, Dieppe) places this
Ysle de Coques about one and a half degrees north of the
Equator.
Willem Blaeu's
Grand Atlas, originally published in 1662, has a colour world map on the back of its front cover which shows
I. de Cocos right on the Equator. Frederik De Witt's
Atlas, 1680 shows it similarly. The
Hondius Broadside map of 1590 shows
I. de Cocos at 2 degrees and 30 minutes north latitude, while in 1596
Theodore de Bry showed the Galápagos Islands near
6 degrees north of the Equator.
Emanuel Bowen, in
A Complete system of Geography, Volume II (London, 1747: 586), states that the Galápagos islands stretch
5 degrees north of the Equator.
James Colnett, surveying eastern Pacific islands for British whaling interests, visited Cocos Island in 1793 and took on board his ship two thousand coconuts. He left a boar and sow, and a male and female goat.
George Vancouver, arriving two years later, anchored his ships
Discovery and
Chatham in what is now called Chatham Bay. He took on water, wood, and a great number of coconuts. Before leaving he had the date of their arrival with the names of the ships and their commanders cut on a rock, joining the one single inscription that was already there. Both Colnett and Vancouver published charts in 1798. Among Colnett's charts was a "Plan of the Island Cocos". Captain
Edward Belcher anchored at Chatham Bay in 1838. He observed that whalers had cut all the wood fit for fuel and that the only coconut trees seen were inaccessible. He added his ship's name to the growing number of inscriptions. With the notable exception of the Galápagos Islands, there was a lack of scientific research into oceanic eastern Pacific islands prior to the 20th century. Publication
The American Naturalist stated in 1891, "we know nothing at all about the fauna and flora of the isolated
Clipperton Island and
Malpelo; we hardly know anything about Cocos Island, which seems to be in many respects quite different from the others, having a more tropical appearance."
Administrative history Cocos Island was annexed by
Costa Rica in 1832 by decree No. 54 of the Constitutional Assembly of the newly independent country. During the 1830s and 1840s
whalers anchored at Cocos Island for water and wood until whaling shifted to other areas of the Pacific. In October 1863, the ship
Adelante marooned 426
Tongan former
slaves on the island when it was discovered that they had contracted
smallpox and were a danger to her crew. By the time the vessel
Tumbes arrived to rescue them one month later, only 38 survivors were found, the rest having perished from smallpox (see
ʻAta). In 1897, the Costa Rican government named the German adventurer and treasure hunter
August Gissler the first Governor of Cocos Island and allowed him to establish a short-lived colony there. On May 12, 1970, the insular territory of Cocos Island was incorporated administratively by means of Executive Decree No. 27, making it the eleventh
district of
Puntarenas canton of the
Puntarenas Province. The island's 33 residents, all of them Costa Rican park rangers, were allowed to vote for the first time in
Costa Rica's February 5, 2006, election. However, the rangers are not considered permanent residents of the district, therefore the census data considers the island to be uninhabited.
Piracy and hidden treasures Cocos Island has featured heavily in many tales of pirate lore and
buried treasure. The first claims of treasure buried on the island came from a woman named Mary Welch, who claimed that 350 tons of gold (about $16 billion in today's money) raided from Spanish galleons had been buried on the island by Captain
Bennett Graham, a naval officer who had become a pirate in 1818. She had been a member of a pirate crew led by Captain Graham, and was transported to an Australian penal colony for her crimes. She possessed a chart showing where Graham's treasure was supposed to be hidden. On her release, she returned to the island with an expedition but had no success in finding anything, as the points of reference in the chart had disappeared. Another pirate supposed to have buried treasure on the island was the Portuguese
Benito Bonito, who began terrorizing the west coast of the Americas around 1818. Though Bonito was hunted down and executed, his treasure was never retrieved. In 1820, with the army of
José de San Martín approaching
Lima, Viceroy
José de la Serna is supposed to have entrusted treasure from the city to British trader Captain
William Thompson for safekeeping until the
Spaniards could secure the country. Instead of waiting in the harbor as they were instructed, Thompson and his crew killed the viceroy's men and sailed to Cocos, where they allegedly buried the treasure. Several early expeditions were mounted on the basis of claims by a man named Keating, who was supposed to have befriended Thompson. On one trip, Keating was said to have retrieved gold and jewels from the treasure. German adventurer
August Gissler lived on the island for most of the period from 1889 until 1908, hunting the treasure, but only found a few gold coins.
Present status and international distinctions Cocos Island was declared a Costa Rican National Park by means of an executive decree in 1978 and designated a
World Heritage Site by
UNESCO in 1997. In 2002, the World Heritage Site designation was extended to include an expanded marine zone of . In addition, it is included in the list of
Wetlands of International Importance. In 2009, Cocos Island was short-listed as a candidate for the
New7Wonders of Nature by the
New7Wonders of the World Foundation, ranking second in the island category. Thanks to the great diversity of marine life in its waters, Cocos Island was named one of the best 10
scuba diving spots in the world by the Professional Association of Diving Instructors and a "must do" according to diving experts. Popular dive spots around the island are Bajo Alcyone (hammerhead sharks), Manuelina Garden (coral garden) and Dos Amigos Grande (natural underwater arch formation). For many, the main attractions are the large
pelagic fish species, which are very abundant in this unique meeting point between deep and shallow waters. The largest schools of hammerhead sharks in the world are consistently reported there. Encounters with dozens if not hundreds of these and other large animals are nearly certain in every dive. Smaller and colorful species are also abundant in one of the most extensive
coral reefs in the southeastern Pacific. Famous oceanographer
Jacques Cousteau visited the island several times and in 1994 called it "the most beautiful island in the world". Such accolades have highlighted the urgent need to protect Cocos Island and its surrounding waters from illegal large-scale fishing, poaching and other
threats. The only persons allowed to live on Cocos Island are Costa Rican park rangers who reside in encampments at Wafer Bay and Chatham Bay. Access by civilians is very limited; tourists and ship crew members are allowed ashore only with permission of island rangers, and are not permitted to camp, stay overnight or collect any flora, fauna or minerals from the island. Occasional
amateur radio DXpeditions are allowed to visit. The island is also very popular in pirate lore. It is said that over 300 expeditions have searched for
buried treasure there, such as the hoard of Benito Bonito, the
Treasure of Lima, and many others. Some small caches have been discovered, leading many to believe that the stories of vast pirate treasures are true, though the majority of searches have been unsuccessful.
Treasure hunting is strictly prohibited by the Costa Rican government and permits are not being issued.
Hermandad Marine Reserve In 2022 Ecuadorean President
Guillermo Lasso announced the expansion of the
Galápagos Marine Reserve by 50%, adding to protect submarine mountains northeast of the islands as the
Hermandad Marine Reserve. It will connect with the protected area around Cocos Island. ==Geology and landscape==