ascidian tadpole

English Thesaurus

1. free-swimming larva of ascidians; they have a tail like a tadpole that contains the notochord (noun.animal)

hypernym	:	larva,
definition	:	the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose (noun.animal)

member meronym	:	ascidiaceae, class ascidiaceae,
definition	:	sometimes classified as an order: sea squirts (noun.animal)