They posted photos and videos on social media and joined koala activists and environmental organisations, including the Bob Brown Foundation, Bellingen Environment Centre, Total Environment Centre, Extinction Rebellion and Save Sydney's Koalas, in calling for better protection of koala habitats.

Chair of the recent NSW Parliamentary Inquiry into Koalas, Greens MP Cate Faehrmann, said the inquiry found that the koala would become extinct in NSW before 2050 without urgent government intervention and had 42 recommendations for actions that must be done now to save the koala.

"The inquiry found that the biggest threat to the koala's survival in NSW was the loss and fragmentation of habitat.

"The time has come for the government to draw and line in the sand and say enough is enough. We know that to save the koala we have to protect their habitat so that's what we're going to do.

"Instead we have developments being fast-tracked that will destroy hundreds of hectares of koala habitat and forests which have been identified as core koala habitat being clear felled by Forestry Corp," Ms Faehrmann said.

Potoroo Palace has two koalas Sapphire and Hope and posted a video of them enjoying a meal of eucalypt leaves. Directors at the centre urged everyone to join the Save Our Koalas Day of Action by staging their own pop-up protest demanding action and sharing on social media.

"If the Environment Minister is serious about doubling koala numbers by 2050, then we can't afford to lose anymore koala habitat," Ms Faehrmann added.