Polynesia

Polynesia is a subregion of Oceania, made up of over 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are termed Polynesians. They share many similar traits including the language family, culture, and belief. Historically, they were experienced sailors who used stars to navigate at night. 

The term Polynesia was first used in 1756 by French writer Charles de Brosses, and originally applied to all the islands of the Pacific. In 1831, Jules Dumont d'Urville proposed a restriction on its use during a lecture to the Geographical Society of Paris. Historically, these islands have also been referred to as the South Sea Islands.

History

Origins and expansion

The Polynesian people are considered to be by linguistic, archaeological and human genetic ancestry a subset of the sea-migrating Austronesian people. Tracing Polynesian languages places their prehistoric origins in the Malay Archipelago, and ultimately, in Taiwan.

Between about 3000 and 1000 BC speakers of Austronesian languages began spreading from Taiwan into Island Southeast Asia.

There are three theories regarding he spread of human across the Pacific to Polynesia. These are outlined well by Kayser et al. (2000) and are as follows:

- Express Train model: A recent (c. 3000-1000 BC) expansion out of Taiwan, via the Philippines and eastern Indonesia and from the northwest ("Bird's head") of New Guinea, on to Island Melanesia by roughly 1400 BC, reaching western Polynesian islands around 900 BC. This theory is supported by the majority of current genetic linguistic, and archaeological data.

- Entangled Bank model: Emphasizes the long history of Austronesian speakers' cultural and genetic interactions with indigenous Island Southeast Asians and Melanesians along the way to becoming the first Polynesians.

- Slow Boat model: Similar to the express-train model but with a longer hiatus in Melanesia along with admixture, both genetically, culturally and linguistically with the local population. This is supported by the Y-chromosome data of Kayser et al. (2000), which shows that all three haplotypes of Polynesian Y chromosomes can be traced back to Melanesia.

Navigation 

Polynesia comprised islands diffused throughout a triangular area with sides of four thousand miles. The area from the Hawaiian Islands in the north, to Easter Island in the east and to New Zealand in the south were all settled by Polynesians. Navigators traveled to small inhabited islands using only their own senses and knowledge passed by oral tradition from navigator to apprentice. In order to locate directions at various times of day and year, navigators in Eastern Polynesia memorized important facts: the motion of specific stars, and where they would rise on the horizon of the ocean; weather; times of travel; wildlife species (which congregate at particular positions); directions of swells on the ocean, and how the crew would feel their motion; colors of the sea and sky, especially how clouds would cluster at the locations of some islands; and angles for approaching harbors.

These wayfinding techniques, along with outrigger canoe construction methods, were kept as guild secrets. Generally each island maintained a guild of navigators who had very high status; in times of famine or difficulty these navigators could trade for aid or evacuate people to neighboring islands. On his first voyage of Pacific exploration Cook had the services of a Polynesian navigator, Tupaia, who drew a hand-drawn Chart of the islands within 3,200 km (2,200 mi) radius (to the north and west) of his home island of Ra'iatea. Tupaia had knowledge of 130 islands and named 74 on his Chart. Tupaia had navigated from Ra'iatea in short voyages to 13 islands. He had not visited western Polynesia, as since his grandfather's time the extent of voyaging by Raiateans has diminished to the islands of eastern Polynesia. His grandfather and father had passed to Tupaia the knowledge as to the location of the major islands of western Polynesia and the navigation information necessary to voyage to Fiji, Samoa and Tonga. As the Admiralty orders directed Cook to search for the "Great Southern Continent", Cook ignored Tupaia's Chart and his skills as a navigator. To this day, original traditional methods of Polynesian Navigation are still taught in the Polynesian outllier of Taumako Island in the Solomon Islands. 

Knowledge of the traditional Polynesian methods of navigation were largely lost after contact with and colonization by Europeans. This left the problem of accounting for the presence of the Polynesians in such isolated and scattered parts of the Pacific. By the late 19 century to the early 20th century a more generous view of Polynesian navigation had come into favor, perhaps creating a romantic picture of their canoes, seamanship and navigational expertise.

In the mid to late 1960s, scholars began testing sailing and paddling experiments related to Polynesian navigation: David Lewis sailed his catamaran from Tahiti to New Zealand using stellar navigation without instruments and Ben Finney built a 40-foot replica of a Hawaiian double canoe "Nalehia" and tested it in Hawaii. Meanwhile, Micronesian ethnographic research in the Caroline Islands revealed that traditional stellar navigational methods were still in every day use. Recent re-creations of Polynesian voyaging have used methods based largely on Micronesian methods and the teaching of a Micronesian navigator, Mau Piailug. 

It is probable that the Polynesian navigators employed a whole range of techniques including use of the stars, the movement of ocean currents and wave patterns, the air and sea interference patterns caused by islands and atolls, the flight of birds, the winds and the weather. Scientists think that long-distance Polynesian voyaging followed the seasonal paths of birds. There are some references in their oral traditions to the flight of birds and some say that there were range marks onshore pointing to distant islands in line with these flyways. One theory is that they would have taken a frigatebird with them. These birds refuse to land on the water as their feathers will become waterlogged making it impossible to fly. When the voyagers thought they were close to land they may have released the bird, which would either fly towards land or else return to the canoe. It is likely that the Polynesians also used wave and swell formations to navigate. It is thought that the Polynesian navigators may have measured the time it took to sail between islands in "canoe-days" or a similar type of expression.

Also, people of the Marshall Islands used special devices called stick charts, showing the places and directions of swells and wave-breaks, with tiny seashells affixed to them to mark the positions of islands along the way. Materials for these maps were readily available on beaches, and their making was simple; however, their effective use needed years and years of study.