What looks at first to be a slimy mess in a Petri dish represents a highly-significant advance in conservation and restoration ecology. Ecologists are celebrating the arrival of the first Maud Island frogs (Leiopelma pakeka) to hatch on mainland New Zealand for many years. No larger than a human adult’s little fingernail, the Maud Island froglets differ from most frog species in that they hatch from the egg as fully-formed froglets without going through the usual tadpole stage.