Deep in the Amazon, the mysterious pink river dolphins are under threat from pollution, mining, and habitat loss. Marine biologist Fernando Trujillo, known locally as Omacha, has dedicated more than 30 years to protecting them. From satellite-tagging dolphins to training fishermen and lobbying governments, he tells Adam Vaughan what it takes to safeguard one of the most biodiverse regions on Earth.

Planet Hope is brought to you in paid partnership with Rolex and its Perpetual Planet Initiative.

Guest: Fernando Trujillo, Founder of the Omacha Foundation and Rolex National Geographic Explorer of the Year 2024

Host: Adam Vaughan, Environment Editor, The Times

Series Producer: Priyanka Deladia

Sound Designer: David Crackles

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