NMFS approves and implements measures included in Framework Adjustment 29 to the Atlantic Sea Scallop Fishery Management Plan that establish fishing year 2018 and 2019 scallop specifications and other measures. The measures in this rule are in addition to the Northern Gulf of Maine management measures of Framework 29 that were published in a separate final rule on March 26, 2018. This action is necessary to prevent overfishing and improve both yield-per-recruit and the overall management of the Atlantic sea scallop resource. The intended effect of this rule is to implement these measures for the 2018 fishing year.