"I know it sounds corny, but it was truly magical." Researcher Gemma Greene describes a filming trip to remember whilst working on the Waterworlds episode.
Fishy encounters with grizzly bears
"I was attaching a camera to a tree when I heard a rustle behind me. I thought it was Mark the cameraman until I heard a grunt..." Assistant producer/ director Paul Williams shares his experiences filming grizzly bears for The Magical Forest episode.
Filming the white rhino
"Following an animal the size of a car and armed with a giant horn into the bush is not something to be taken lightly." Researcher Jasper Montana writes for the BBC TV Blog about his filming trip to Kenya