The islands of the South Pacific are divided into three cultural areas: Melanesia ("black islands"), Polynesia ("many islands") and Micronesia ("small islands"). Parts of Indonesia and Australia are also sometimes included in the Oceanic region. Although Southeast Asians settled in New Guinea and Australia about 30,000 years ago, some of Oceania's most isolated islands were populated only 2,000 years ago. Oceanic art honors regional deities, nature spirits and ancestors. It also sometimes functions as an indicator of social status.