On Saturday, Australia celebrated World Environment Day with tree planting, clean up events and conservation rallies across the country.
Around 200 people gathered in Sydney's Hyde Park to call for the government to strengthen legal protections for koalas.
Conservationists say NSW koala populations have plummeted in the past 30 years.
Even before the Black Summer bushfires that devastated habitats, it was estimated to be fewer than 20,000.