(a) A line drawn from the southernmost extremity of Amelia Island to the northeasternmost extremity of Little Talbot Island.

(b) A line formed by the centerline of the highway bridge from Little Talbot Island to Fort George Island.

(c) A line drawn across the seaward extremity of the St. Johns River Entrance Jetties.

(d) A line drawn across the seaward extremity of the St. Augustine Inlet Jetties.

(e) A line formed by the centerline of the highway bridge over Matanzas Inlet.

(f) A line drawn across the seaward extremity of the Ponce de Leon Inlet Jetties.