In Cave Swiftlets: Masters of Echolocation, narrator Sir David Attenborough introduces cave swiftlets, birds that, like bats, use echolocation to navigate the dark caves of Borneo. Cave swiftlets rely on clicks to find their way through pitch-black cave passages and locate their small nesting sites. Their nests, made entirely of saliva, take 30 days to build. For centuries, people have harvested these nests, which are the key ingredient in the valuable delicacy, bird’s nest soup. This video is excerpted from BBC’s Planet Earth, a breathtaking documentary series that highlights the natural wonders of our planet.

20 years ago, audiences around the world were introduced to the breathtaking beauty of our planet through BBC's Planet Earth. Narrated by the legendary naturalist Sir David Attenborough, the documentary series brought viewers face-to-face with creatures from every corner of the globe. 

Now, as we celebrate the 20th anniversary of this unforgettable show, it’s time to test your knowledge! Do you remember how animals survive in the harshest environments? Or the surprising tricks they use to hunt and protect their young? Try this quiz with your students ages 8–14.

March 5, 2026, marks the 20th anniversary of premiere of BBC's Planet Earth. The breathtaking and award-winning documentary series, narrated by none other than Sir David Attenborough, highlights the natural wonders of our planet. In honor of this momentous occasion, we've put together some of the most popular clips from this beloved natural history show for students ages 8–14. 

Get up close and personal with hydroplaning dolphins. Witness an iguana hatchling's terrifying race to survive, pursued by racer snakes. Watch the first steps of two polar bear cubs emerging from hibernation. More of the real-life magic of our blue marble awaits in this video playlist, part of our Planet Earth Collection. Grab your Planet Earth Passport and start exploring!