The Parties to the Nauru Agreement (PNA) controls the world’s largest sustainable tuna purse-seine fishery. PNA countries provide around 50% of the global supply of skipjack tuna, the most commonly canned tuna.
The PNA members are: Federated States of Micronesia, Kiribati, Marshall Islands, Nauru, Palau, Papua New Guinea, Solomon Islands and Tuvalu.
PNA promotes the practice of catching skipjack and yellowfin tuna in free-swimming schools, that is without using fish-aggregating devices (FADs). Free-school fishing is certified by the Marine Stewardship Council (MSC). It is said to be more sustainable than fishing around FADs, because it limits the amount of bycatch, which may include sharks, rays, turtles, and dolphins.