Several thousand years ago the Melanesian Torres Strait Islander peoples were established in the Torres Strait Islands, and commerce and contact was continued via this route although there is little evidence to suggest immediate influences extended much further south. A more sporadic contact along the northern Australian coast was maintained by seafarers across the Timor and Arafat Seas, with substantial evidence of Macassan contact with Australia in the centuries prior to European arrival, and also evidence of earlier contacts and exchanges by other groups. However, these exchanges do not appear to have involved any extended settlement or migrations of non-Aboriginal peoples to the region.