Bear Grylls is a British adventurer, television presenter, and author, best known for his survival skills and outdoor adventures. He gained fame through his television series, Man vs. Wild, where he demonstrated how to survive in extreme conditions. Grylls has also written several books on survival and adventure. In addition to his television work, Bear Grylls has served as a Chief Scout for the Scouts in the UK, promoting outdoor activities and skills among young people. He has participated in various expeditions, including climbing Mount Everest and crossing the Atlantic Ocean in a small boat.