Terra satellite captured a view of Kangaroo Island on Tuesday that shows one third of the land mass covered by burn scars or active fires. The space agency described it as "an ecological tragedy" and estimates the fires have consumed 383,013 acres (155,000 hectares).
The island is home to Flinders Chase National Park, an area known for seals, whales, koalas, kangaroos and the only wild population of platypus in South Australia.
The bushfires on the island started as lightning strikes in the park. "Ecologists within the park put estimates of the number of koalas that have perished in the fire at 25,000 which is half the island's population of the popular animals," NASA said.