50 CFR 18.123 : Wildlife And Fisheries (§ 1.1 To Parts 698-699) — (§ 18.1 To Parts 101-199) — United States Fish And Wildlife Service, Department Of The Interior (Continued) (§ 18.1 To Parts 101-199) — Taking, Possession, Transportation, Sale, Purchase, Barter, Exportation, And Importation Of Wildlife And Plants (Continued) (§ 18.1 To § 24.12) — Marine Mammals (§ 18.1 To § 18.129) — Nonlethal Taking Of Marine Mammals Incidental To Oil And Gas Exploration, Development, And Production Activities In The Beaufort Sea And Adjacent Northern Coast Of Alaska (§ 18.121 To § 18.129) — When is this subpart effective?