The Floreana giant tortoise (*Chelonoidis niger niger*) was last seen alive on Floreana Island in the 1840s. Whalers and fur sealers had hunted them for their meat and oil for two centuries, taking them by the boatload. By the time anyone thought to document what was being lost, the tortoises were gone. The island fell silent in a way no living thing could fill.
On February 20, 2026 — one hundred and eighty-something years later — 158 juvenile Floreana giant tortoises were lowered from helicopters onto the slopes of Floreana Island's volcano. They sniffed the air. They took their first slow, deliberate steps on ancestral ground. They were home.
**The Most Ambitious Tortoise Reintroduction in History**
This moment is the result of one of conservation's most extraordinary detective stories. In 2008, scientists conducting genetic surveys on Wolf Volcano, on the distant island of Isabela, found something that shouldn't have existed: a population of giant tortoises carrying Floreana ancestry. Some had DNA profiles that were unmistakably derived from Floreana lineage — including a few animals estimated to be over 100 years old, potentially alive when the last pure-blooded Floreana tortoises were still roaming the island.
The theory: sailors had offloaded Floreana tortoises near Wolf Volcano in the 19th century — either as supplies they no longer needed, or simply because they could. Those tortoises had survived. They had bred with local tortoises. And their hybrid descendants were still alive, carrying the genetic blueprint of a species presumed extinct.
Scientists brought 23 of the most Floreana-lineage tortoises to the Galápagos National Park breeding centre. From them, by 2025, more than 600 hatchlings had been born. Several hundred grew large enough for reintroduction. And on February 20, the first 158 of them went home.
"This is the first step in restoring an entire ecosystem. The tortoises are ecosystem engineers — they disperse seeds, open trails through vegetation, and shape the landscape in ways no other species can replace." — Galápagos Conservancy
**Clearing the Way First**
The reintroduction wasn't simply a matter of releasing tortoises. Floreana's ecosystems had been devastated not just by the removal of the tortoises, but by centuries of invasive species introductions. Rats — introduced by the same sailors who took the tortoises — had been eating eggs and hatchlings for generations. Feral cats preyed on vulnerable young. Invasive plants had restructured the vegetation.
Starting in 2023, a comprehensive eradication campaign tackled most of the rats and feral cats on the island. The painstaking, multi-year effort was a prerequisite for the tortoise return — juveniles released without it wouldn't have survived long enough to grow to protected adult size. With the predator pressure substantially reduced, the path was clear.
The reintroduction is led by the Galápagos National Park Directorate in partnership with the Galápagos Conservancy, the Charles Darwin Foundation, Island Conservation, and Fundación Jocotoco — a coalition of organisations that has been working toward this moment for over a decade.
**What Tortoises Do That Nothing Else Can**
Giant tortoises are what ecologists call keystone species: animals whose presence shapes an entire ecosystem in ways that cascade through every other living thing. On Floreana, their absence has left visible gaps.
Tortoises are legendary seed dispersers. They eat enormous quantities of fruit and deposit the seeds — viable and ready to germinate — across huge distances as they move. Plants that evolved alongside the tortoises have seeds adapted for gut passage; without the tortoise, the seeds don't travel, and the plants don't regenerate effectively.
They also graze, opening clearings in dense vegetation that other species depend on. They create paths and wallow spots that become microhabitats. Their movement patterns and foraging behaviour effectively engineer the landscape — a process that had been absent from Floreana for six or seven human generations.
The 158 tortoises released in February are juveniles, still growing. They'll spend years on the volcano's slopes before dispersing further. Some will be monitored with GPS trackers. Scientists will watch for signs that native plants are beginning to regenerate, that the vegetation structure is shifting, that Floreana is, slowly, beginning to remember what it was.
**Twelve Species. One Island. A Larger Plan.**
The tortoise reintroduction is deliberately framed as the first step in a broader restoration plan for Floreana: the reintroduction of 12 locally extinct species in total, including land birds, insects, and plant species that vanished alongside the tortoises over the past two centuries.
Floreana is also inhabited — around 150 people live there year-round, and the restoration project has been designed with the local community at its centre. The long-term vision is an island where intact ecosystems and sustainable human livelihoods coexist — a model Galápagos conservationists hope can be replicated across the archipelago.
**The Numbers:**
🐢 **180+ years** — time since Floreana giant tortoises were last seen on the island 🧬 **2008** — year scientists discovered Floreana-ancestry tortoises on Wolf Volcano 🥚 **23 hybrid tortoises** → **600+ hatchlings** at the breeding centre by 2025 📅 **February 20, 2026** — date of the first 158 reintroduced 🐀 Rats and feral cats eradicated from most of the island first (2023–2025) 🌿 **12 locally extinct species** — total planned for reintroduction to Floreana
The Galápagos Islands are where Darwin observed the machinery of evolution firsthand. It is fitting that they are also where, 180 years after one of conservation's most painful losses, the science of restoration is bringing something back from the edge of nothing.
The tortoises don't know any of this. They just know the ground is warm. The plants are familiar. The air is right.
They're home. 🐢
*Sources: The Guardian · Galápagos Conservancy · Charles Darwin Foundation · Mongabay · Island Conservation (February 20, 2026)*
