Reports put the number of green turtle hatchlings emerging from Tetiaroa’s beaches this season at more than 54,000. Systematic monitoring, but, counted 15,614 hatchlings in the 2024-2025 season, not the 54,264 reported in some media. Tetiaroa Society and Te mana o te moana confirmed the figure. It is based on counting empty eggshells and observing nests directly, which conservation groups consider the most reliable estimate.
Seasonal monitoring on Tetiaroa runs from September to March each year, allowing consistent year-to-year comparisons and tracking of long-term trends.
Relentless fieldwork
The numbers reflect steady, hands-on work. In the latest season, researchers counted about 113 nesting females. They recorded 161 nests and more than 430 female tracks or emergences on the beaches. Tetiaroa Society describes the effort as a regular, months-long program rather than a one-off survey.
Researchers identify each turtle through photos and genetic samples, while flipper tags help track individuals. This careful approach, standard in marine research, lets scientists follow population trends and individual turtles over time. The team also rescued 26 weak or injured hatchlings during the season; eight were still in rehabilitation when the figures were reported.
Brando’s vision and the atoll’s change
Tetiaroa’s change into a conservation site has an unusual backstory. Marlon Brando first visited in 1961 while filming Rebelión a bordo. Drawn to the island, he began negotiations to buy it and completed the purchase in 1966. He wanted a low-impact reserve that could serve as a scientific base and a place for education, rather than a private retreat alone.
Tetiaroa Society considers the atoll one of French Polynesia’s most successful green turtle nesting sites. The organization credits much of that success to removing invasive predators such as rats or keeping their numbers under strict control, which has significantly improved hatchling survival rates.
Brando’s early efforts included a small hotel in the 1970s, but the project struggled financially and suffered storm damage. After his death in 2004, his estate partnered with hotelier Richard Bailey on a new approach: the tightly managed eco-resort The Brando, alongside a research station run by Tetiaroa Society. Since 2014, the partnership has combined tourism with science, keeping conservation at its core in a model rarely seen elsewhere in the Pacific.
Protecting the beaches
The turtle monitoring program depends on nightly patrols and nest mapping, with teams keeping watch throughout. They identify nesting females and record nest sites. Incubation conditions are measured, while hatching rates are tracked. Teams also monitor threats such as rising sand temperatures and invasive predators. Camera traps have shown that rats, introduced long ago, prey on hatchlings as they emerge. Removing the rats has become a priority, benefiting turtles as well as seabirds, crabs and native plants.
Climate change brings new risks. Rising sea levels and coastal erosion threaten nests; hotter sand can also upset the balance of male and female hatchlings. Tetiaroa’s beaches remain mostly untouched, giving turtles rare access to undisturbed nesting grounds, a refuge lost in much of the world.
Beyond the sand
The biggest dangers come after turtles reach the ocean. Satellite tracking of 41 marked turtles shows adult females travel as far as Fiji to feed, while juveniles stay closer to shore. Beyond the protected atoll, turtles face accidental capture in fisheries. Plastic pollution and boat strikes add to the pressure, alongside habitat loss. The 15,614 hatchlings counted this year are only those that made it out of the nest; few will survive to adulthood.
For a long-term ecological project, success takes time to establish. This season’s reported numbers reflect years of work by scientists, local staff and volunteers. The future of Tetiaroa’s turtles depends on continued vigilance and flexible management, as well as the return of nesting females. Nearly sixty years after Brando’s purchase, the atoll is less a Hollywood footnote than a working example of what determined conservation can accomplish when it has space and resources, backed by steady commitment.
