NMFS approves and implements the measures of Framework Adjustment 30 to the Atlantic Sea Scallop Fishery Management Plan that establish scallop specifications and other measures for fishing years 2019 and 2020. This action is necessary to respond to updated scientific information, and the intended effect of this rule is to prevent overfishing, improve both yield-per-recruit and the overall management of the Atlantic sea scallop resource, and implement these measures for the 2019 fishing year.