Shocking Discovery: Rig Sharks Can Produce Sounds, Scientists Reveal

Scientists have made a groundbreaking discovery about the rig shark (Mustelus lenticulatus), a species previously believed to be silent. New research published in Royal Society Open Science reveals that rig sharks can produce sounds by snapping their teeth together, creating clicks similar to the sound of a popping balloon.

The study, conducted by Dr. Carolin Nieder and her team, recorded 10 rig sharks off the coast of New Zealand. The researchers found that these sharks emitted sharp clicks—some loud enough to reach 156 decibels—primarily when they were being handled. This challenges long-held assumptions that sharks rely solely on body language and chemical signals for communication.

Unlike most fish, sharks lack a swim bladder, an organ used by many marine species to produce sounds. Scientists believe the rig shark's clicking noise comes from its unique, interlocking teeth, typically used for crushing prey. However, researchers are still investigating whether the sounds serve as a form of distress signal, communication, or a warning to predators.

Experts now speculate that other shark species might have similar vocal abilities. This discovery opens the door for future studies on how sharks interact in their natural habitats and whether sound plays a larger role in their survival than previously thought.

Sources:https://edition.cnn.com/2025/03/25/science/rig-shark-produces-sound-evidence/index.html