Australia is in the midst of one of the worst bushfire crises the world has seen. Since September, entire communities have been engulfed by relentless heat and fires. The flames are showing no signs of slowing down - which means only one thing... death tolls are rising.

Amidst the tragedy, there are still some positive stories. This week, some heartwarming footage has surfaced of a group of teens filling their car with koalas to protect them from the flames and the internet can't get over it, with many hailing them as "heroes."

Keep scrolling to see the clip for yourself, they've managed to save so many...

Australia is being ravished by one of the worst bush fire crises the world has seen in decades.

Due to soaring temperatures and one of the worst droughts in years, the relentless fires have been burning since September. We're currently in January. Just let that sink in.

New South Wales is suffering immensely at the moment.

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There have been fires reported in every state, but New South Wales is truly taking a beating by bush fires and is undoubtedly the hardest hit. According to CNN, so far, in New South Wales alone, more than 2000 houses have been destroyed.

NSW declared a state of emergency last month.

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What does this mean? Well, it grants "extraordinary powers" to the NSWRFS commissioner, including the authority to allocate government resources and direct government agencies in taking action, according to CNN.

The raging fires have had a devastating impact...

The BBC reported that over 100 bush fires continue to burn in populated coastal and inland regions to the city's north.

Twenty-four people have been confirmed to have died in the fires since they started...

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Including several volunteer firefighters.

And it's not just the flames themselves that are having deadly consequences...

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Last month, the smoke was so bad in Sydney that air quality measured 11 times the "hazardous" level, CNN reports.

The Australian fire services have been stretched to their limits.

Firefighters all over the country have been tirelessly battling the formidable blazes and are struggling to contain them. Keep scrolling to see the heartbreaking pictures of the aftermath.

Australia has even been forced to make a global call for help...

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And it was Canada that was the first to respond and take action. The Canadian Interagency Forest Fire Centre, based in Winnipeg, answered the call for help after realizing the bush fire situation is expected to continue for many more weeks and gave up their Christmas to help fight the raging fires.

Other countries offered their assistance...

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Including the U.S. and New Zealand, who have sent in more firefighters to try and help tackles the blazes.

But even with assistance from overseas...

There seems to be no end to the blazes. In total, more than 5.9 million hectares (14.6 million acres) have been burned, CNN reports. And those who escaped the flames have lost their homes, with all their possessions perishing to the flames.

People have been desperately fleeing to beaches for cover.

And are left stranded awaiting evacuation. It's a truly heartbreaking sight.

How long could the fires actually be burning for?

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Sadly, Australia has only just entered summer, meaning temperatures could remain high for some weeks. In fact, temperatures usually reach their highest during January and February, so there may be no end in sight for months.

The fires have also had a devasting impact on wildlife.

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Several of Australia's native species have been affected including kangaroos, koalas, wallabies, possums, wombats, and echidnas. Keep scrolling to see the latest snaps showing the true devastation on wildlife.

And the latest statistics are some of the most alarming yet.

The country is totally unprepared for the devastation caused to its wildlife. Science for Wildlife executive director Dr Kellie Leigh told the New South Wales upper house inquiry: "We're getting a lot of lessons out of this and it's just showing how unprepared we are.
"There's no procedures or protocols in place - even wildlife carers don't have protocols for when they can go in after fire."

Koalas have been amongst the hardest hit.

It's believed that at least a third of koalas in New South Wales alone have perished in the flames.

And that's not all...

It's feared that animals that managed to survive the flames will need huge amounts of humanitarian assistance to get populations anywhere near back to what they used to be.

Residents have even been trying to rescue helpless animals themselves.

And of course, we all remember Lewis, the koala who was heroically rescued by a woman using the clothes off her back.

A staggering number of animals have perished in the fires.

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And it's only set to get worse. At the time of writing, an estimated 25,000 koalas alone have died.

Nearly half a billion animals have died.

Ecologists from the University of Sydney have said that it's thought around 480 million mammals, birds, and reptiles have died since September.

But amidst the tragedy, there is some hope...

via: YouTube

So many people are desperately trying to save the native wildlife, including 2 teenagers who have gone viral this week.

A video surfaced of the teenagers filling their car with koalas to save them from the flames.

via: YouTube

The footage shows 19-year-old Micah and 18-year-old Caleb travelling around one of the areas worst hit by the bushfires, collecting koalas and taking them to their car.

The short clip was filmed on Kangaroo Island.

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Known for its rich biodiversity, so many species there are at risk of being wiped out. Keep scrolling for the full clip.

Micah and Caleb have now managed to save a huge amount of koalas.

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And of the koalas they rescued, 6 of them were orphans and 2 were mothers with children. But they aren't just rescuing them...

They estimate they have saved around 20 koalas.

The pair have also said they will be looking after the koalas with the outlook to eventually release them back into the wild. "There are many good-hearted people from all age groups. These teenagers are heroes," wrote one user after viewing the video.

Watch the full clip below:

Keep scrolling to see the harrowing pictures the sum up how devastating the bushfires truly are. This is so heartbreaking...