NMFS publishes this final rule to implement the 2004 management measures to prevent overfishing of the eastern tropical Pacific Ocean (ETP) tuna stocks, consistent with recommendations by the Inter-American Tropical Tuna Commission (IATTC) that have been approved by the Department of State (DOS) under the Tuna Conventions Act. The purse seine fishery for tuna in the Convention Area will be closed from December 13, 2004 through December 31, 2004. This final rule will also close the U.S. longline fishery in the Convention Area for the remainder of 2004 if the bigeye tuna catch in the Convention Area reaches the reported level of catch made in 2001. These actions are taken to limit fishing mortality on tuna stocks caused by purse seine fishing and longline fishing in the Convention Area and contribute to the long-term conservation of tuna stocks at levels that support healthy fisheries.