The National Marine Fisheries Service (NMFS) publishes its final Annual Determination (AD) for 2015, pursuant to its authority under the Endangered Species Act (ESA). Through the AD, NMFS identifies U.S. fisheries operating in the Atlantic Ocean, Gulf of Mexico, and Pacific Ocean that will be required to take observers upon NMFS' request. The purpose of observing identified fisheries is to learn more about sea turtle interactions in a given fishery, evaluate measures to prevent or reduce sea turtle takes, and implement the prohibition against sea turtle takes. Fisheries identified on the 2015 AD (see Table 1) will be eligible to carry observers as of January 1, 2015 and will remain on the AD for a five-year period. The fisheries listed on the final determination will be required to carry observers upon NMFS' request until December 31, 2019.