Terrestrial adults discarded their lateral line systems and adapted their sensory systems to receive stimuli via the medium of the air.
tɚɹˈɛstɹɪəl ɐdˈʌlts dɪskˈɑːɹdᵻd ðɛɹ lˈæɾɚɹəl lˈaɪn sˈɪstəmz ænd ɐdˈæptᵻd ðɛɹ sˈɛnsɚɹi sˈɪstəmz tə ɹᵻsˈiːv stˈɪmjʊlˌaɪ vˈaɪə ðə mˈiːdiəm ʌvðɪ ˈɛɹ.