Naturalist says experience making second series of BBC show revealed devastating threat posed to oceans by plastic.

Sir David Attenborough has called for the world to cut back on its use of plastic in order to protect oceans. His new BBC TV series, Blue Planet II, is to demonstrate the damage the material is causing to marine life.

Speaking at the launch of Blue Planet II, which will be broadcast 16 years after the original series, the broadcaster and naturalist said action on plastics should be taken immediately and that humanity held the future of the planet “in the palm of its hands”.

His comments come amid growing global calls for cutbacks in the use of plastic.

Attenborough said rising global temperatures and plastic were the biggest concerns for the ocean. “What we’re going to do about 1.5 degrees rise in the temperature of the ocean over the next 10 years, I don’t know, but we could actually do something about plastic right now,” he said.