English: Scanning electron micrograph of a frozen intact zoospore and sporangia of the chytrid fungus (Batrachochytrium dendrobatidis). The fungus is one of the worst killers of Australian frogs. The fungus was first discovered in dead and dying frogs in Queensland in 1993. Research has now shown the fungus is widespread across Australia and that it has been present in the country since at least 1978. Photo credit: Dr Alex Hyatt, CSIRO Livestock Industries' Australian Animal Health Laboratory (AAHL).