On August 25, 2006, NMFS issued a final rule to require the use of chain mats on sea scallop dredges in the mid-Atlantic sea scallop fishery in order to help protect sea turtles. The regulation became effective on September 25, 2006. Shortly after the rule's effective date, NMFS became aware of a discrepancy between the two options in the regulation for configuring the chain mat. This emergency final rule corrects the existing regulation to ensure that the protection to sea turtles expected from the August 25, 2006 rule is achieved. This emergency final rule requires that any vessel with a sea scallop dredge and required to have a Federal Atlantic sea scallop fishery permit, regardless of dredge size or vessel permit category, present in waters south of 41[deg] 9.0' N. lat., from the shoreline to the outer boundary of the Exclusive Economic Zone must have on each dredge a chain mat composed of horizontal (tickler) and vertical ("up- and-down") chains for the duration of the trip. The chains must be configured such that the length of each side of the square or rectangle formed by the intersecting chains is less than or equal to 14 inches (35.5 cm). Any incidental take of threatened sea turtles in sea scallop dredge gear in compliance with this gear modification requirement and all other applicable requirements will be exempted from the Endangered Species Act's prohibition against takes.