The Prince of Wales has described Sir David Attenborough as a "big inspiration" to him growing up, and the motivation behind his new wildlife documentary highlighting the work of rangers.
In an unexpected appearance at a screening earlier this week, Prince William credited the veteran nature presenter with "being able to present wonderful parts of the world to many of us most of us will never get a chance to visit".
He said he hoped his new six-part series, called Guardians, "does the same kind of thing".
The prince and Sir David share a passion for conserving the natural world, and have supported each other's projects in the field.