Audible Oceans is a film by John Shiga with editing and graphic design by Taylor Maclean at the Centre for Communicating Knowledge in The Creative School at Toronto Metropolitan University. The film explores the ruins of a vast sonar network built during the Cold War by the US Navy as part of its nuclear warfare strategy. Inspired by Ursula Franklin’s critique of the rise of technological societies, Audible Oceans provides insight into the way this vast underwater listening system expanded the military’s control over ocean space and blurred the boundaries between military and civilian life. Audible Oceans also outlines a speculative future of Cold War sonar networks wherein digital models of abandoned sonar sites become public platforms for critically engaging with nuclear imperialism and its ongoing impact on the ocean environment.