Several hundred climate activists - some dressed as blackbirds as a symbol of warning and others banging drums - gathered in St Ives, just a stone's throw from the heavily guarded G7 summit venue at Carbis Bay, and marched along the beach.
"The sea levels are rising, the plastic is rotting in the ocean, we're nearly on the verge of mass extinction now. It needs to be done now, we have no time to act, we go to do it now," an unnamed protester said."For years and years, they've talked, they have met, they have talked, they've met and then they go away and they do nothing to change what's actually happening and we need them to act rather than just talking about it," said another demonstrator.
Behind police cordons and layers of security, the leaders from the United States, Japan, Germany, Britain, France, Italy, and Canada gathered for a three-day summit that they hope will show the West can still act decisively on major global issues.
Police have mounted a major security operation for the summit, with thousands of officers drafted in from across Britain. Some of those planning demonstrations have said they intended their protests to be noisy, disruptive and annoying.
Meanwhile in Falmouth, a group of young climate activists gathered outside the G7 media centre in Falmouth.
Among them was 25-year-old rapper and activist Jimmy Hall. It was when he was clearing a beach of plastic debris that Hall felt he had to put into words his sense of despair at the growing environmental crisis facing his generation.
On Friday officers said they had arrested seven people after stopping two cars in which they found paint, smoke grenades and megaphones. However, those organising some of the protests accuse the authorities of oppressive tactics.