2024-04-29 11:07:42 UTC

During the Cold War, the US Navy attempted to create a secret code using whale songs, dolphins, sea lions, and seals. The plan involved broadcasting these noises from submarines and using a computer, the Combo Signal Recognizer (CSR), to decode the messages on the other end. However, the authenticity of the code posed numerous challenges, as the natural background noise in the recordings made it difficult to create a clear and decipherable message. Despite these obstacles, the Navy persisted in their efforts between 1959 and 1965.