Ted Danson

as Narrator (voice)

Ben Bradshaw

as Self - UK Fisheries Minister 2003-2007

Roberto Mielgo Bragazzi

as Self - Former Tuna Farmer

Charles Clover

as Self - Author, "The End of the Line"

John Crosbie

as Self - Fisheries Minister, Canada (archive footage)

Haidar El Ali

as Self - Diver, Senegal

Ray Hilborn

as Self - University of Washington

Jeffrey Hutchings

as Self - Dalhousie University, Canada