Australia's Great Barrier Reef is in trouble according to the country's government.
It says the conditions are 'poor' and that extreme events in recent years, such as cyclones and flooding, and the effects of climate change are to blame.
Scientists also say chemicals, used in farming, which find their way into the water have also had a big impact.
Read more http://www.bbc.co.uk/newsround/23269909
It says the conditions are 'poor' and that extreme events in recent years, such as cyclones and flooding, and the effects of climate change are to blame.
Scientists also say chemicals, used in farming, which find their way into the water have also had a big impact.
Read more http://www.bbc.co.uk/newsround/23269909