The Tuamotu are renowned for undoubtedly hosting one of the largest populations of great hammerhead sharks (Sphyrna mokarran) in the world. However, this iconic species is critically endangered worldwide and remains poorly understood. It is in this context that the Tamataroa program, supported by the Mokarran Protection Society and the Gombessa expeditions, works to better understand and protect this species before it is too late.
A human adventure at the heart of the fenua
The majestic mokarran, guardian of the passes and master of the lagoon, is emblematic of the Polynesian waters. The Mokarran Protection Society, based in Rangiroa, tirelessly fights for its preservation by combining science and tradition.
The origin of a passion
It all started when three friends passionate about great hammerhead sharks realized the urgency of their protection. Although they lacked resources and experience, they already imagined the potential of participatory sciences. Jean-Marie Jeandel, founder of the MPS and diving guide in Rangiroa, states: « We told ourselves we had to use modern means, like GoPros, because every diver can become an image sensor. » Initially, they simply collected basic data on sharks, indicating « male » or « female » in an Excel file. In collaboration with the Polynesian Shark Observatory, they share their discoveries while becoming aware of their limitations in terms of means and skills. Despite everything, their love for the mokarran pushed them to conduct the first censuses in the Tuamotu. Ten years later, their passion bears fruit.
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