Deep Blue is a 2003 nature documentary film that is a theatrical version of the 2001 BBC nature documentary series The Blue Planet. Alastair Fothergill and Andy Byatt are credited as directors, and six cinematographers are also credited. The film premiered at the San Sebastian Film Festival in Spain on 20 September 2003. It screened in over 20 territories from 2003 to 2005 and grossed over $30 million at the box office.