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American Focus > Blog > Tech and Science > Scientists Record First Known Shark Sounds
Tech and Science

Scientists Record First Known Shark Sounds

Last updated: March 26, 2025 4:54 am
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Scientists Record First Known Shark Sounds
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Scientists have recently made a groundbreaking discovery by recording the first known sounds produced by sharks. Contrary to popular belief, sharks are typically thought to silently roam the depths of the ocean. However, a small species of shark has shattered this notion by emitting short, high-frequency clicks when handled underwater.

The study, published in Royal Society Open Science, marks the first instance of a shark actively producing sound. Marine biologist Carolin Nieder, the lead author of the study, stumbled upon this phenomenon while conducting research on the hearing capabilities of rig sharks in the coastal waters of New Zealand. Despite sharks not possessing a swim bladder like other fish species that produce sound, the rig sharks exhibited a unique crackling noise when handled.

Through a series of experiments, the researchers confirmed that the rig sharks were indeed generating these clicklike sounds. By placing the sharks in tanks equipped with sound recorders, they observed that the sharks produced high-frequency clicks in response to being handled. The clicks, lasting only a fraction of a second, were more prevalent in the initial moments of handling, indicating a startle response from the sharks.

Further analysis revealed that the frequencies of the clicks were outside the rig sharks’ hearing range, suggesting that they may not be using these sounds for communication. Instead, the researchers hypothesized that the sharks’ distinctive set of flattened teeth, used for cracking open crab shells, may be responsible for producing the clicks as they snap their jaws together.

While this study provides compelling evidence of sharks producing sound, more research is needed to determine the purpose of these clicks in natural environments. Future experiments will focus on understanding the triggers for shark sound production and exploring whether other shark species exhibit similar behavior.

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Interestingly, recent research has also uncovered sound production in other cartilaginous fish such as rays and skates, indicating that this trait may be widespread among these ancient marine creatures. The discovery of sharks emitting sounds challenges previous assumptions about their silent nature and underscores the need for further investigation into the acoustic behavior of these fascinating animals.

In conclusion, the newfound ability of sharks to produce sound opens up a new realm of exploration in marine biology. By delving deeper into the auditory capabilities of sharks and their cartilaginous relatives, scientists hope to gain a better understanding of these enigmatic creatures and their intricate communication systems. As we continue to unravel the mysteries of the ocean, listening in on more shark species may reveal a symphony of sounds previously unheard beneath the waves.

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