Snakes in Wallis and Futuna

Wallis and Futuna is a small French Pacific territory of volcanic and coral islands scattered between Fiji and Samoa. The land is tropical and isolated, made up of the high island of Uvea, the islands of Futuna and Alofi, and a fringe of smaller islets. This geography matters for snakes, because remote oceanic islands are reached by very few terrestrial reptiles. Our database records just 3 snake species for the territory, 1 of which is venomous, and the great majority of snakes here are non-venomous. The habitats that shape this fauna are warm coastal forests, plantation and garden edges, leaf litter, and the shallow sea around the reefs.

The single venomous element of the fauna belongs to the sea snake group, the marine elapids that range across the tropical Pacific. These are saltwater animals seen in lagoons, reef flats, and inshore waters rather than on land, and they are not aggressive toward people who leave them alone. As true elapids they do carry potent venom, so they should never be picked up, handled, or pulled from a net or line. There are no dangerous land snakes established on these islands, which is typical for an isolated oceanic group far from any continental snake fauna.

The harmless majority are small, secretive terrestrial snakes of the kind that colonize Pacific islands easily. The most characteristic is the tiny blind snake, a burrowing, worm-like animal that lives in soil and leaf litter and feeds on ant and termite eggs and larvae. Blind snakes are completely harmless, often mistaken for earthworms, and one widespread species has spread across the Pacific through the movement of potted plants and soil. These ground-dwelling snakes pass almost unnoticed and pose no threat to people.

Snakes here fill quiet but useful ecological roles. The burrowing land snakes help control populations of ants, termites, and other soil invertebrates and aerate the soil as they move through it. The marine sea snakes are predators on small reef fish and eels, forming part of the lagoon and reef food web. In a small island system with limited reptile diversity, even a handful of species contributes to keeping invertebrate and small-fish numbers in balance.

On safety, the honest picture is reassuring. Nearly every snake a person encounters on land in Wallis and Futuna is harmless, and there is no established dangerous land snake. The one real medical concern is the venomous sea snake found in the surrounding waters, most relevant to fishers and anyone handling nets or catches. Bites from venomous sea snakes are medical emergencies treated in a hospital, where antivenom and supportive care are the appropriate treatment. Never handle a wild snake, on land or in the water, even one that looks calm. If a bite occurs, contact local emergency services immediately, or in the United States call Poison Control at 1-800-222-1222.