The spawning of marbled groupers in French Polynesia. The mass aggregation and spawning of marbled groupers in French Polynesia is one of the rarest marine events in the world. Once year, between June to July, about ten thousand marbled groupers gather in a secret place just outside a lagoon in South Fakarava. During the spawning, the male grouper rubbed itself against the female to excite her. When the female was ready, she darted to the surface and an entire school of male groupers chased after her. In an explosive moment, the female laid her eggs and the male groupers quickly fertilized them, creating a cloud of new life.