(a) Establishment
In order to preserve for public use and enjoyment certain areas possessing outstanding natural, historic, and recreational values, the Secretary of the Interior (hereinafter referred to as the "Secretary") may establish and administer the Gulf Islands National Seashore (hereinafter referred to as the "seashore").

(b) Composition

(1) In general
The seashore shall comprise the areas described in paragraphs (2) and (3).

(2) Areas included in boundary plan numbered NS–GI–7100J
The areas described in this paragraph are the following gulf coast islands and mainland areas, together with adjacent water areas as generally depicted on the drawing entitled "Proposed Boundary Plan, Proposed Gulf Islands National Seashore," numbered NS–GI–7100J, and dated December 1970:

(A) Ship, Petit Bois, and Horn Islands in Mississippi;

(B) the eastern portion of Perdido Key in Florida;

(C) Santa Rosa Island in Florida;

(D) the Naval Live Oaks Reservation in Florida;

(E) Fort Pickens and the Fort Pickens State Park in Florida; and

(F) a tract of land in the Pensacola Naval Air Station in Florida that includes the Coast Guard Station and Lighthouse, Fort San Carlos, Fort Barrancas, and Fort Redoubt and sufficient surrounding land for proper administration and protection of the historic resources.

(3) Cat Island
Upon its acquisition by the Secretary, the area described in this paragraph is the parcel consisting of approximately 2,000 acres of land on Cat Island, Mississippi, as generally depicted on the map entitled "Boundary Map, Gulf Islands National Seashore, Cat Island, Mississippi", numbered 635/80085, and dated November 9, 1999 (referred to in sections 459h to 459h–10 of this title ¹ as the "Cat Island Map").

(4) Availability of Map
The Cat Island Map shall be on file and available for public inspection in the appropriate offices of the National Park Service.