Australia's Kangaroo Island is a haven for rare wildlife. A third of it has burned in bushfires, NASA images show

The extent of fire damage to Kangaroo Island in the state of South Australia was captured by NASA's Terra satellite on Tuesday. The devastation can be clearly seen, with brown burn scars and active fires where lush greenery once stood.

NASA estimates that 155,000 hectares (600 square miles) of the island has been consumed by fires, calling it "an ecological tragedy".

Lying off Australia's southern coast, Kangaroo Island is famous for its pristine wilderness. It contains protected nature reserves teeming with native wildlife, such as sea lions, koalas and diverse bird species.

The island is home to the endangered Kangaroo Island dunnart -- a small marsupial found only on the island -- and the glossy black cockatoo, which have been brought back from the brink of extinction over the past two decades.

Devastating blazes have been ripping through the island since late December, killing two people, destroying 56 homes and damaging hundreds of buildings, according to the South Australia government.

Southern Ocean Lodge, a luxury hotel near Flinders Chase National Park in Kangaroo Island, was destroyed in the wildfires.

The NASA image showed that much of the burned areas were in the island's west, including the Flinders Chase National Park, where the fires were initially sparked by lightning strikes. The park is a popular place for spotting the duck-billed platypus, one of Australia's most beloved species.

Ecologists estimate that about 25,000 koalas on Kangaroo Island have died in the fires, accounting for half of the island's population of the marsupials, according to NASA.

The island was once considered a safe haven for koalas because the population there was free from chlamydia -- a disease that can cause blindness, infertility and death that is prevalent among koalas on the mainland.

Australia's deadly wildfires are showing no signs of stopping. Here's what you need to know

The blazes have been burning across Australia for months, razing homes and wiping out entire towns. Across the country, more than 7.3 million hectares (28,185 square miles) of land has burned -- much of it bushland, forests and national parks, home to the country's beloved and unique wildlife.

According to report by ecologists at the University of Sydney, nearly half a billion animals in the state of New South Wales have been impacted by the fires, with millions potentially dead. The total number of animals affected nationwide could be as high as a billion, according to Christopher Dickman, the University of Sydney ecologist who led the report.

CNN's Jessie Yeung contributed to this report.

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