Mature, ripe coconuts can be used as edible seeds, or processed for oil and plant milk from the flesh, charcoal from the hard shell, and coir from the fibrous husk.
From here, island-hopping via coral atolls lining the Tethys Sea, potentially boosted by ocean currents at the time, would have proved crucial to dispersal, eventually allowing ancestral coconuts to reach India.
[52][53] Other evidence for a Central Indo-Pacific origin is the native range of the coconut crab; and the higher amounts of C. nucifera-specific insect pests in the region (90%) in comparison to the Americas (20%), and Africa (4%).
The Pacific group is the only one to display clear genetic and phenotypic indications that they were domesticated; including dwarf habit, self-pollination, and the round "niu vai" fruit morphology with larger endosperm-to-husk ratios.
They provided a portable source of both food and water, allowing Austronesians to survive long sea voyages to colonize new islands as well as establish long-range trade routes.
[49][18][61] The niu kafa form is the wild ancestral type, with thick husks to protect the seed, an angular, highly ridged shape to promote buoyancy during ocean dispersal, and a pointed base that allowed fruits to dig into the sand, preventing them from being washed away during germination on a new island.
[18][49] However, they may have also been partially selected for thicker husks for coir production, which was also important in Austronesian material culture as a source for cordage in building houses and boats.
[62] The two groups are genetically distinct, with the dwarf variety showing a greater degree of artificial selection for ornamental traits and for early germination and fruiting.
[65][64] The fact that all dwarf coconuts share three genetic markers out of thirteen (which are only present at low frequencies in tall cultivars) makes it likely that they all originate from a single domesticated population.
[57] Thor Heyerdahl provides an alternative, and much shorter, estimate based on his first-hand experience crossing the Pacific Ocean on the raft Kon-Tiki:[69] The nuts we had in baskets on deck remained edible and capable of germinating the whole way to Polynesia.
[57] If they were naturally distributed and had been in the Pacific for a thousand years or so, then we would expect the eastern shore of Australia, with its own islands sheltered by the Great Barrier Reef, to have been thick with coconut palms: the currents were directly into, and down along this coast.
However, both James Cook and William Bligh[70] (put adrift after the Bounty mutiny) found no sign of the nuts along this 2,000 km (1,200 mi) stretch when he needed water for his crew.
These provide substantial circumstantial evidence that deliberate Austronesian voyagers were involved in carrying coconuts across the Pacific Ocean and that they could not have dispersed worldwide without human agency.
[75] The coconut palm is damaged by the larvae of many Lepidoptera (butterfly and moth) species which feed on it, including the African armyworm (Spodoptera exempta) and Batrachedra spp.
[103][104] Traditional areas of coconut cultivation in India are the states of Kerala, Tamil Nadu, Karnataka, Puducherry, Andhra Pradesh, Goa, Maharashtra, Odisha, West Bengal and, Gujarat and the islands of Lakshadweep and Andaman and Nicobar.
As per 2014–15 statistics from Coconut Development Board of Government of India, four southern states combined account for almost 90% of the total production in the country: Tamil Nadu (33.8%), Karnataka (25.2%), Kerala (24.0%), and Andhra Pradesh (7.2%).
[114] In the United States, the Food and Drug Administration declared that coconut must be disclosed as an ingredient on package labels as a "tree nut" with potential allergenicity.
[115] Cocamidopropyl betaine (CAPB) is a surfactant manufactured from coconut oil that is increasingly used as an ingredient in personal hygiene products and cosmetics, such as shampoos, liquid soaps, cleansers and antiseptics, among others.
Malakatad (literally "leather-like") refers to fully mature coconut meat (around 8 to 9 months old) with an opaque white appearance, a tough rubbery to leathery texture, and is difficult to separate from the shell.
It is a haustorium, a spongy absorbent tissue formed from the distal part of embryo during coconut germination, which facilitates absorption of nutrients for the growing shoot and root.
[147] The sap can be reduced by boiling to create a sweet syrup or candy such as te kamamai in Kiribati or dhiyaa hakuru and addu bondi in the Maldives.
[148] Coconut sap, usually extracted from cut inflorescence stalks is sweet when fresh and can be drunk as is such as in tuba fresca of Mexico (derived from the Philippine tubâ).
Coconut cups, often with highly decorated mounts in precious metals, were an exotic luxury in medieval and Early Modern Europe, that were also thought to have medical benefits.
A coco chocolatero was a simpler type of cup used to serve small quantities of beverages (such as chocolate drinks) between the 17th and 19th centuries in countries such as Mexico, Guatemala, and Venezuela.
Dried half shells are used as the bodies of musical instruments, including the Chinese yehu and banhu, along with the Vietnamese đàn gáo and Arabo-Turkic rebab.
The shell, freed from the husk, and heated on warm ashes, exudes an oily material that is used to soothe dental pains in traditional medicine of Cambodia.
[162] In World War II, coastwatcher scout Biuku Gasa was the first of two from the Solomon Islands to reach the shipwrecked and wounded crew of Motor Torpedo Boat PT-109 commanded by future U.S. president John F. Kennedy.
Gasa suggested, for lack of paper, delivering by dugout canoe a message inscribed on a husked coconut shell, reading "Nauru Isl commander / native knows posit / he can pilot / 11 alive need small boat / Kennedy.
[162] The Zulu Social Aid and Pleasure Club of New Orleans traditionally throws hand-decorated coconuts, one of the most valuable Mardi Gras souvenirs, to parade revelers.
[189] In March 1521, a description of the coconut was given by Antonio Pigafetta writing in Italian and using the words "cocho"/"cochi", as recorded in his journal after the first European crossing of the Pacific Ocean during the Magellan circumnavigation and meeting the inhabitants of what would become known as Guam and the Philippines.