Travel guide · Wildlife
Galápagos racer snake
The snake that chased an iguana into 13 million views. Where racers hunt, the hatchling season worth timing, and why Floreana's racer needed rescuing.
Photo: D. Gordon E. Robertson (CC BY-SA 3.0) via Wikimedia CommonsThe 2016 Planet Earth II clip of racers hunting a marine iguana hatchling hit 13 million views and made this the most famous snake nobody had planned to see. Reality is quieter and better: racers are diurnal, shy, fast for their size, and hunting them is a matter of standing still in the right island at the right season. Four endemic snake species live in the archipelago; the racer is the one you are most likely to meet.
Where to see them
- Fernandina, Punta Espinosa. The famous location. Racers gather here in May and June, when marine iguana hatchlings emerge from the sand, and hawks compete for the same meal.
- Española and Fernandina hold the healthiest, most visible populations, thanks to their protected, isolated coasts.
- Isabela and the western itineraries. Common but rarely seen; they vanish fast on open lava.
- Cape Douglas (Fernandina). The only place on Earth where a land snake regularly hunts fish in rocky tide pools, a behavior unique to this species.
- Floreana’s story is different. The Floreana racer vanished from the island under pressure from rats, cats and dogs; the last populations survive on the Gardner-by-Floreana and Champion islets, where mark-recapture work (Massey University, 2017) estimates roughly 3,000 individuals, about 2,880 on Gardner and 210 on Champion, and the National Park is working on reintroducing it to Floreana as the island’s predator eradication moves ahead (the island’s odd human history is in our Floreana guide).
When to see them
Racers are day-active at dawn and dusk, camouflaged, and eat only every few weeks, so sightings are uncommon even where they are common. The reliable window is the hatchling season: May–June at Punta Espinosa, when snakes hunt in the open and sometimes in numbers; the island’s other residents are covered in our Fernandina page. On land-based visits, the arid trails of the inhabited islands hold racers, but your odds stay low. Treat any sighting as luck, not a schedule.
How they live
Adults run 0.8–1 m, with a maximum around 1.25 m, and can move at up to 3.5 mph (5.6 km/h), which is genuinely fast for a snake and still slower than a sprinting hatchling. They are constrictors with venom that is harmless to humans, and they hunt small reptiles, rodents and insects. The iguana-hunt footage is real but edited: individual snakes tire after seconds, and most chases fail. On Fernandina in May and June, hawks and herons also fish the same hatchling runs, which makes the whole shore a working food chain in real time.
Conservation
Status varies by population, and that is the honest way to present it: the western racers (Fernandina, Isabela) are Least Concern, while the eastern populations tied to San Cristóbal and the Floreana islets are Near Threatened, with the Floreana racer itself effectively extirpated from its home island. Introduced species are the single biggest threat across the group. The Galápagos hawk is the racer’s main natural predator, so the two species’ fortunes are linked.
Details worth knowing
- The BBC scene was filmed at Fernandina; guides on western itineraries know the spot.
- They hunt with sight and tongue-flicking rather than heat sensing.
- If you see one, freeze. They flee people at 10 metres, so a still group on a trail is what produces the classic encounter.
The four snakes of Galápagos
The archipelago holds four recognised species of snake, all in the racer group, all endemic and all harmless to people. The western racer is the Fernandina and Isabela animal, the one in the famous footage, and the most often seen. The Galápagos racer of the central and eastern islands, Santa Cruz, Santiago, Santa Fe and San Cristóbal among them, is the species a land-based visitor is most likely to cross on an arid trail. The Española racer is confined to Española and its satellites, and the Floreana racer survives on the Champion and Gardner islets after disappearing from Floreana itself.
Taxonomists have reshuffled the group several times since 2017 and will again, so the names your guide uses may differ from a field guide printed five years ago. What does not change is the behaviour: slim, fast, diurnal, mildly venomous to the lizards and rodents it constricts and entirely safe for you. There are no sea snakes in Galápagos, no vipers and no rattlesnakes; every snake you could meet here is one of these four.
Frequently asked questions
Are Galápagos racer snakes dangerous?
No. They are small constrictors with venom that is harmless to humans, they flee people at ten metres and they eat lizards, rodents, insects and iguana hatchlings.
Where was the Planet Earth II snake scene filmed?
At Punta Espinosa on Fernandina, where racers gather in May and June to hunt marine iguana hatchlings emerging from the sand. Western cruise itineraries visit the site.
How many snake species live in Galápagos?
Four recognised species, all endemic racers: the western racer, the Galápagos racer of the central and eastern islands, the Española racer and the Floreana racer, now confined to two islets.
Sources
Last verified: October 2026