Wildlife filmmakers Kelsey Eliasson and Karine Genest have more experience than most when it comes to filming bears in the wild, but that doesn’t make the job any less demanding. From the science of predicting bear behaviour, to the challenges of flying (crashing) a drone, the duo discuss some of the difficulties they've endured while filming wild animals.

Watch the rest of the series here, or learn more about Bears: Ultimate Survival here