This environmental assessment (EA) evaluates the activities proposed in the Papahanaumokuakea Marine National Monument (Monument) Management Plan. The proposed Monument Management Plan is the Monument Co-Trustee agencies' overall guiding framework for their mission to carry out seamless integrated management to ensure ecological integrity and achieve strong, long-term protection and perpetuation of Northwestern Hawaiian Islands (NWHI) ecosystems, Native Hawaiian culture, and heritage resources for current and future generations.