Hugh Miller goes on a diving expedition in Antarctica for the filming of Blue Planet II. Despite the challenges posed by the icy waters, Miller explores the underwater world to capture stunning footage for the documentary series. He describes the surreal experience of diving in Antarctica, surrounded by icebergs and curious wildlife such as penguins and seals. Miller explains the importance of showcasing these remote and untouched ecosystems to raise awareness about conservation. Overall, the article highlights Miller's adventurous spirit and dedication to capturing the beauty of Antarctica for Blue Planet II.