Aboriginal and Torres Strait Islander students joined tens of thousands of their peers across the country to strike against the federal government's climate policies.
The passionate young people skipped school to call for an end to coal and gas projects - including Adani's proposed Carmichael coalmine - and a shift to 100 per cent renewable energy.
Indigenous students said they also want to see urgent action to address rising sea levels in the Torres Strait, and the water crisis along the Murray-Darling Basin.
Some students, like Harley and Kyanah Hickey, travelled hundreds of kilometres to make their voices heard in Sydney.
Harley is from Walgett in northwest New South Wales and he said he's taking action for his future.
"I hear stories from my mum about the river and for it to be gone now, it's just disrespectful," he said.
"But it makes me happy to see all these kids from the city. To come here and to rally for the future of our water, which will hopefully go back into the river if all this works."
Kyanah she said she's taking a stand against "greedy cotton farmers".
"My family has travelled about 10-and-a-half hours to be here and hopefully make a difference," she said.
"We need more water. You can't drink the water out of the tap and we don't even have water for ourselves.
"The water isn't going to be enough. It's not sustainable for young children. If you drink the water there are lots of consequences.
"Even if we can't stop it at least we need to stop the causes of climate change."
Here are some of the social media photos and posts from the strikes around the country today: