The forelimbs may be partially developed and the hind limbs are rudimentary in pond-living species but may be rather more developed in species that reproduce in moving water.
ðə fˈɔːɹlɪmz mˈeɪ biː pˈɑːɹʃəli dɪvˈɛləpt ænd ðə hˈaɪnd lˈɪmz ɑːɹ ɹˌuːdɪmˈɛntɚɹi ɪn pˈɑːndlˈɪvɪŋ spˈiːsiːz bˌʌt mˈeɪ biː ɹˈæðɚ mˈoːɹ dɪvˈɛləpt ɪn spˈiːsiːz ðæt ɹᵻpɹədˈuːs ɪn mˈuːvɪŋ wˈɔːɾɚ.