We, the National Marine Fisheries Service (NMFS), are publishing this final rule to implement our determination to list elkhorn (Acropora palmata) and staghorn (A. cervicornis) corals as threatened species under the Endangered Species Act (ESA) of 1973, as amended. We have reviewed the status of the species and efforts being made to protect the species, and we have made our determinations based on the best scientific and commercial data available. We also solicit information that may be relevant to our analysis of protective regulations and to the designation of critical habitat for these two species.