Fidji, Tonga, and Vanuatu are part of the South Pacific, a region populated by humans for thousands of years. However, the timeline of how these islands were settled is complex and not fully understood. A new study by researchers from the Senckenberg Centre for Human Evolution and Paleoenvironment at the University of Tübingen in Germany has suggested that migrations from Papua New Guinea happened earlier than previously believed. This research also marks the first time scientists have analyzed genomes from the Fiji Islands, offering new insights into the history of human settlement in the region. Geographers classify the South Pacific islands into two main groups: "Near Oceania" and "Remote Oceania." Near Oceania includes areas like New Guinea, the Bismarck Archipelago, and parts of the Solomon Islands, which were populated during the human migrations out of Africa during the Pleistocene epoch. Remote Oceania, which includes Vanuatu, Fiji, Tonga, Samoa, and other islands, was not settled until at least 4,000 years ago. These early settlers, associated with the Lapita culture, came from Southeast Asia through the Bismarck Archipelago. They moved eastward, reaching Vanuatu about 3,000 years ago, then Fiji 100 years later, and Tonga and Samoa about 50 years after that. The rest of Polynesia was populated over the next 1,500 to 2,000 years. The study analyzed the genomes of 72 individuals from the east of the Solomon Islands, Vanuatu, Fiji, and Tonga to better understand later migration patterns, including those of the Papuan culture and a third wave from Polynesia. The first interbreeding between Southeast Asian and Papuan populations occurred around 2,500 years ago in Vanuatu. This interbreeding continued in waves, with Papuan ancestry increasing over time as people moved eastward. Researchers identified the oldest individual with Papuan ancestry as a woman buried on the island of Tanna in Vanuatu about 2,700 years ago. She had no mixed heritage, indicating a pure Papuan lineage. Mixed ancestry appeared 200 years later on the island of Malakula in Vanuatu. A third wave of migration moved in the opposite direction, from Polynesia to the west, influencing the genetic makeup of Vanuatu and other islands. This movement is supported by archaeological and linguistic evidence, which show the presence of Polynesian culture in Vanuatu between 1,200 and 750 years ago. However, the study notes that not all migrations are linked to language changes. For example, people in Fiji and Tonga still speak languages from the Lapita culture, while Papuan languages are mostly found in Near Oceania. Researchers found that the first wave of Lapita migrants spread more quickly than later groups linked to Papua New Guinea, which arrived in Fiji about 500 years after their initial presence in Vanuatu. This research provides a clearer picture of how human populations have interacted and moved across the South Pacific over thousands of years.