(a) Aircraft, designated landing areas. (1) The portion of Tobin Harbor located in the NE1/4 of sec. 4, T. 66 N., R. 33 W.; the SE1/4 of sec. 33, T. 67N., R. 33 W., and the SW1/4 of sec. 34, T. 67 N., R. 33 W.

(2) The portion of Rock Harbor located in the SE1/4 of sec. 13, the N1/2 of sec. 24, T. 66 N., R. 34 W., and the W1/2 of sec. 18, T. 66 N., R. 33 W.

(3) The portion of Washington Harbor located in the N1/2 of sec. 32, all of sec. 29, SE1/4 of sec. 30, and the E1/2 of sec. 31, T. 64 N., R. 38 W.

(b) Underwater diving. No person shall undertake diving in the waters of Isle Royale National Park with the aid of underwater breathing apparatus without first registering with the Superintendent.

(c) Mammals. Dogs, cats, and other mammals may not be brought into or possessed in the park area, except for guide dogs accompanying the blind.

[35 FR 7793, May 21, 1970, as amended at 42 FR 21777, Apr. 29, 1977]