On November 27, 2020, we, NMFS, published in the Federal Register a proposal to designate 17 island units of critical habitat in the Pacific Islands Region for 7 Indo-Pacific coral species listed under the Endangered Species Act (ESA). Based on public comments and new information regarding the interpretation of the records of the listed corals and application to critical habitat, a substantial revision of the proposed rule is warranted. Accordingly, we withdrew the 2020 proposed rule and published a new proposed rule. We proposed to designate critical habitat for five of the seven coral species that were addressed in the 2020 proposed rule: Acropora globiceps, Acropora retusa, Acropora speciosa, Euphyllia paradivisa, and Isopora crateriformis. Proposed critical habitat includes 16 island units encompassing approximately 251 square kilometers (km2; 97 square miles, mi2) of marine habitat. In the development of the proposed rule, NMFS considered economic, national security, and other relevant impacts of the proposed designations, but we are not excluding any areas from the critical habitat designations due to anticipated impacts.