Hawaii: Message in the Waves (S25E09)

This beautiful and inspiring documentary features the wildlife of Hawaii's famous surf zone and the surfers and scientists who are fighting to protect it. Turtles, dolphins, monk seals and albatrosses all have to cope with the growing number of people using the island beaches, but now animals face a new threat from washed-up plastic. A varied bunch of island characters, including born and bred Hawaiian musician Jack Johnson, make it clear that these beautiful islands have a powerful message for us all. (BBC)