Pond-type larvae often have a pair of balancers, rod-like structures on either side of the head that may prevent the gills from becoming clogged up with sediment.
pˈɑːndtˈaɪp lˈɑːɹviː ˈɔfən hæv ɐ pˈɛɹ ʌv bˈælənsɚz, ɹˈɑːdlˈaɪk stɹˈʌktʃɚz ˌɔn ˈiːðɚ sˈaɪd ʌvðə hˈɛd ðæt mˈeɪ pɹɪvˈɛnt ðə ɡˈɪlz fɹʌm bᵻkˈʌmɪŋ klˈɑːɡd ˌʌp wɪð sˈɛdɪmənt.