Between approximately 1500 and 800 BCE, the Lapita people—Austronesian seafarers from the northern Philippines and Taiwan—migrated across the western Pacific Ocean. They appeared in the Bismarck Archipelago around 1500 BCE and spread 4,500 kilometers to Vanuatu, New Caledonia, Fiji, Tonga, and Samoa within several centuries. Archaeologists identify them by distinctive dentate-stamped pottery. They navigated in double-hulled outrigger canoes using stars, ocean swells, and bird behavior. The Lapita became ancestors of Polynesian peoples, with their settlement of Tonga and Samoa establishing the ancestral Polynesian homeland.