The Ladoga ringed seal was isolated in freshwater lakes and separated from the Arctic ringed seal as a result of the isostatic rebound of the region following the end of the Weichselian Glaciation.
ðə lædˈoʊɡɚ ɹˈɪŋɡd sˈiːl wʌz ˈaɪsəlˌeɪɾᵻd ɪn fɹˈɛʃwɔːɾɚ lˈeɪks ænd sˈɛpɚɹˌeɪɾᵻd fɹʌmðɪ ˈɑːɹktɪk ɹˈɪŋɡd sˈiːl æz ɐ ɹɪzˈʌlt ʌvðɪ ˌaɪsəstˈæɾɪk ɹᵻbˈaʊnd ʌvðə ɹˈiːdʒən fˈɑːloʊɪŋ ðɪ ˈɛnd ʌvðə waɪksˈiːliən ɡlˌeɪsɪˈeɪʃən.