Sir David Attenborough was persuaded to do a “penguin dance” to warm up while filming at temperatures of -18C in the Arctic.
The BBC star was with executive producer Mike Gunton and the team doctor Patrick Avery when they filmed in snow-covered northern Finland for BBC1’s The Green Planet.
Gunton said that it was breathtakingly beautiful but “brutally cold” as they watched filming take place - and they needed to get the blood moving again.
