Climate activist group Extinction Rebellion has launched week-long action throughout Brisbane, starting with a march across Victoria Bridge from South Brisbane to the city centre on Monday morning.

The group, which is demanding 100 per cent renewable energy, giving nature legal rights and the sharing of science, will hold protests every day in the city this week.

Extinction Rebellion launches its week-long protest in Brisbane marching through West End to the CBD. Credit:Nine News

It warned that every day there would be a "swarming flash mob" early in the morning, starting at Queens Gardens.

On Monday organisers held a large-scale, all-day event at Musgrave Park in South Brisbane, launching a solidarity march with First Nations people across to the CBD.