Whale song was first uncovered during the Cold War when the military used microphones underwater to track submarines and sonar communication. This initial discovery of the underwater symphonies was said to power the first wave of anti-whaling legislation in 1986. Today’s campaigners report pressure for whaling to return, and hope the new visualisations by musician and philosopher David Rothenberg and graphic visualiser Mike Deal will raise awareness of the threats faced to these majestic and musical creatures.