Eight small island nations in the Midwestern Pacific have saved their economies and prevented overfishing of tuna through a successful fishing agreement with the PNA (Parties to the Nauru Agreement). The countries, which are located in the Pacific Ocean, have seen a significant decrease in overfishing and damage to other fish species. The new system introduced by the PNA charges ship owners for each day of fishing and has increased the economic benefits returned to the countries. Kiribati, a small island nation, has seen a significant increase in fishery income from $27 million in 2008 to $160 million last year.