stranding

(A) a marine mammal is dead and is—

(i) on a beach or shore of the United States; or

(ii) in waters under the jurisdiction of the United States (including any navigable waters); or

(B) a marine mammal is alive and is—

(i) on a beach or shore of the United States and unable to return to the water;

(ii) on a beach or shore of the United States and, although able to return to the water, is in need of apparent medical attention; or

(iii) in the waters under the jurisdiction of the United States (including any navigable waters), but is unable to return to its natural habitat under its own power or without assistance.