The South Pacific Nation is a region of the world consisting of many small island nations. Tonga, Samoa, Nauru, and Fiji are all countries located in this region. Tonga is an archipelago of over 170 islands located in the South Pacific Ocean. Samoa is an independent nation located in the South Pacific Ocean, east of the Solomon Islands. Nauru is a small island nation located in the Central Pacific Ocean. Fiji is an archipelago of over 300 islands located in the South Pacific Ocean.