Versions of 50 CFR 226.229 - Critical Habitat for the Beringia Distinct Population Segment of the Bearded Seal Subspecies Erignathus barbatus nauticus on LawServer 2024 50 CFR 226.229 – Critical Habitat for the Beringia Distinct Population Segment of the Bearded Seal Subspecies Erignathus barbatus nauticus 2023 50 CFR 226.229 – Critical Habitat for the Beringia Distinct Population Segment of the Bearded Seal Subspecies Erignathus barbatus nauticus. 2022 50 CFR 226.229 – Critical Habitat for the Beringia Distinct Population Segment of the Bearded Seal Subspecies Erignathus barbatus nauticus.