Each egg has a large yolk sac and the larva feeds on this while it develops inside the egg, emerging fully formed as a juvenile salamander.
ˈiːtʃ ˈɛɡ hɐz ɐ lˈɑːɹdʒ jˈoʊk sˈæk ænd ðə lˈɑːɹvə fˈiːdz ˌɔn ðɪs wˌaɪl ɪt dɪvˈɛləps ɪnsˈaɪd ðɪ ˈɛɡ, ɪmˈɜːdʒɪŋ fˈʊli fˈɔːɹmd æz ɐ dʒˈuːvənˌaɪl sˈælɐmˌændɚ.