Bubble decoys instead of whale calls

Did submarines ever evade sonar by making whale noises?

No known example is identified; primitive German noise and bubble decoys are the alternative discussed.

No example of escaping through whale-call imitation is identified in the exchange. German primitive noise and bubble devices provide the alternative example of acoustic deception. Their purpose was to create misleading acoustic contacts for pursuing vessels or homing weapons. The brief explanation does not distinguish particular devices or establish a detailed development history.