[Code of Federal Regulations] [Title 36, Volume 1] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR3.23] [Page 34] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER I--NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR PART 3--BOATING AND WATER USE ACTIVITIES--Table of Contents Sec. 3.23 SCUBA and snorkeling. The following are prohibited: (a) SCUBA diving and snorkeling within locations designated as swimming, docking, or mooring areas, except in accordance with conditions which may be established by the superintendent. (b) Diving in waters open to the use of vessels, other than those propelled by hand, without displaying a standard diver flag.