Ian Somerhalder is an American actor, director, and environmental activist, best known for his portrayal of Damon Salvatore in the hit TV series The Vampire Diaries (2009-2017). Born on December 8, 1978, in Covington, Louisiana, Somerhalder first gained attention for his role as Boone Carlyle in the popular series Lost (2004-2010). His work on The Vampire Diaries earned him several Teen Choice Awards and a People's Choice Award. Beyond acting, Somerhalder is deeply involved in environmental causes, founding the Ian Somerhalder Foundation in 2010 to promote conservation and sustainability initiatives.