Researchers recorded rig sharks making short, high-frequency clicks when handled underwater, marking the first time a shark was observed producing sound. Marine biologist Carolin Nieder discovered this unexpected phenomenon during her Ph.D. research in New Zealand. The rig sharks, which lack a swim bladder typically used for sound production in many fish, demonstrated vocalization through unique means, leading to new insights into shark behavior and communication.
Nieder stated, "At first we had no idea what it was because sharks were not supposed to make any sounds." This exploration led to the groundbreaking discovery.
The sounds produced by the rig sharks were unexpected, marking the first known occurrence of a shark making its own sound, which contradicts earlier beliefs.
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