Ocean Odyssey (working title "Oceans") is a two-part, two-hour (the two parts last an hour long) television programme produced by Impossible Pictures Limited for the BBC. It follows the life of a bull sperm whale from his first deep dive until his death, stranded on a beach (originally it was to be a voyage in a submarine). Unlike most Impossible Pictures productions, it uses CGI to recreate currently living animals. Also, most of the backgrounds are CG as well.