mˈɛtɹɪɹhˌɪntʃɪdz wɜː ðɪ ˈoʊnli ɡɹˈuːp ʌv ˌɑːɹtʃˈɑːsɔːɹz tə bɪkˌʌm fˈʊli ɐdˈæptᵻd tə ðə mɚɹˈiːn ɹˈɛlm, bᵻkˈʌmɪŋ pɛlˈædʒɪk ɪn lˈaɪfstaɪl.
Metriorhynchids were the only group of archosaurs to become fully adapted to the marine realm, becoming pelagic in lifestyle.