Davina McCall: Life at the Extreme S01E04 - Costa Rica - Wet

In the final episode of the series, Davina travels to the Costa Rican jungle, one of the wettest places on earth, a habitat in which animals thrive. Even with near 100 per cent humidity, and being less than a quarter of the size of the UK, it's home to a staggering 500,000 species of life.