Extinction Rebellion activists form logo on sand at Bondi Beach

Climate activists have formed the shape of an hour glass on the sand at Bondi Beach this morning.

The symbol, formed collectively by dozens of protesters, is the Extinction Rebellion logo.

The action comes after a week of protests in capital cities across the country and the world.

Protesters marched with flags and signs, chained themselves to cars, boats and train tracks, blocked roads, suspended themselves from bridges, and thrust their heads in the sand at Manly Beach.

The group is demanding governments tell the truth by declaring a climate and ecological emergency, reduce net greenhouse gas emissions to net zero by 2025 and create a Citizens' Assembly on climate and ecological justice.