Finding something worth knowing…

Nature

Coconuts couldn't float across the Pacific alone; people carried them

Coconuts are famous for drifting on ocean currents, yet models of Pacific winds and currents show they could not have crossed that ocean by themselves. Austronesian voyagers domesticated them and took them from island to island as food, water and boat-building material. Their name comes from a Portuguese word for a ghostly face.

Cocos nucifera is the only living species in its genus, a palm reaching 30 metres with leaves up to 6 metres long. Its greatest genetic diversity lies in the Central Indo-Pacific. Linguistic, archaeological and genetic evidence all point to Austronesians domesticating Pacific coconuts in Island Southeast Asia during their expansion between about 3000 and 1500 BCE, spreading them east into the Pacific and west to Madagascar. South Asian, Arab and later European sailors carried an Indo-Atlantic type along other coasts and eventually to the Americas.

Two fruit forms tell the story of domestication. Wild niu kafa nuts are long and triangular, with thick husks and less flesh, making them buoyant for sea dispersal. Domesticated niu vai nuts are rounder, with thinner husks and more meat and water. Botanically the fruit is a drupe rather than a true nut: a glossy skin, a fibrous husk of coir, and a hard shell about 4 millimetres thick with three pores, only one of them functional. The water inside is endosperm full of free-floating nuclei that gradually lays down the solid white meat.

Portuguese and Spanish explorers meeting Pacific Islanders in 1521 thought the three marks on the shell looked like the face of the coco, a ghost of Portuguese folklore. Marco Polo had earlier called it nux indica, Indian nut, translating Arabic. Linnaeus gave it its scientific name in 1753; nucifera means nut-bearing.

A tall palm may carry around 80 fruits a year on good soil, begins bearing after six to ten years and lives up to a century. It flowers continuously, with each female flower taking 11 months to become a harvestable nut. It has no taproot, just thousands of shallow fibrous roots like a grass. In 2024 the world grew 65.5 million tonnes, 73 percent of it from Indonesia, India and the Philippines. Husked nuts keep for months at room temperature; the bald ones sold abroad last only a few weeks unless chilled.

Source: Coconut

Related

More in Nature · All topics