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The world's largest coral reef system should be listed as a World Heritage site that is "in danger", scientists have said.

A new report backed by the United Nations said the Great Barrier Reef off the coast of Queensland in Australia, has been significantly impacted by climate change and the warming of the oceans, so they have recommended for it to be added to the list of endangered World Heritage sites.

Coral bleaching is also threatening the reef because fossil fuels are being burned. Six big bleaching events have happened since 1998 and there's been four over the last seven years.

Bleaching happens when the water warms too much, causing corals to force out the colourful algae living in their tissues and they turn white.

The report made 10 priority recommendations that needed to be addressed "with utmost urgency". Some of these included:

The United Nations Educational, Scientific and Cultural Organisation (Unesco) will make a formal recommendation for it to be put on the endangered list to the world heritage committee next year.

Canberra, the capital city of Australia, has campaigned for years to keep the reef which contributes nearly $4.3 billion to the economy - off the endangered list.

This is because many people think that if the reef wasn't classed as a World Heritage site, less tourists and people would want to come to Australia and visit it.

Before the Covid pandemic, around 2 million tourists visited the reef every year and it provides jobs for 64,000 people.

Environment Minister Tanya Plibersek said the government would push to not list the reef as endangered because climate change was threatening all coral reefs across the world.

"There is no need to single the Great Barrier Reef out in this way because there is no government taking the risks to coral reefs more seriously than the Australian government," she said.

The old Australia government before this one has been criticised for supporting coal and fossil fuels and not doing enough to protect the environment.