| Also see fishlike tadpoles that will later metamorphose into American bullfrogs, sprouting legs and losing their tails. |
| Ordinarily, between 6 and 11 percent of leopard frog tadpoles survive and metamorphose into adults. |
| Then, after thirteen or seventeen years, the nymphs crawl to the surface and metamorphose into red-eyed adults. |
| Embryonic coelomic structures have specific fates as the bilaterally symmetrical larvae metamorphose into radially symmetric adults. |
| The tadpoles of some species, such as the bullfrog, take as long as two years to metamorphose into young frogs. |
| Most amphibians hatch as aquatic, swimming larvae, then metamorphose into terrestrial forms. |
