Invasive Snake Species Causes Concern on Mallorca

Thu 24th Jul, 2025

The popular tourist destination of Mallorca is facing an unexpected ecological challenge as a non-native snake species, the Horseshoe Snake, is rapidly spreading across the island. While these snakes are not venomous to humans, their rising population is alarming many residents and environmental experts alike.

Historically known for its beautiful beaches and vibrant nightlife, Mallorca is now encountering an increasing number of snake sightings, with three different species reported: the Ladder Snake, the Smooth Snake, and the Horseshoe Snake. The latter has raised significant concern, particularly among local farmers, who warn of its potential impact on native wildlife.

Experts indicate that the Horseshoe Snake, which is not indigenous to the island, thrives in Mallorca's environment due to the absence of natural predators. They believe that these snakes likely arrived in the early 2000s via imported plants, particularly olive and carob trees from Andalusia.

Recent reports from the Balearic Islands show that sightings of these snakes, which can grow up to 1.85 meters long, are becoming more frequent. Their diet primarily consists of lizards, and young birds are also at risk as their population expands. The invasive nature of these snakes poses a significant threat to the local ecosystem.

Local residents have begun to notice these snakes more frequently, with reports of vacationers encountering them in their gardens. The spread of the Horseshoe Snake indicates that this invasive species is well-established on the island.

Experts caution that once an invasive species becomes widespread, it is almost impossible to eradicate it completely. This has been demonstrated in various failed attempts across the globe, as snakes tend to hide in concealed areas, making them difficult to capture.

Landscape architects and local businesses are responding to the situation by offering snake traps for properties where these reptiles are prevalent. However, many residents are still unprepared to deal with the increasing number of snakes in their vicinity.

In light of the situation, experts advise anyone who encounters a snake to stay calm and avoid sudden movements. It is recommended to back away slowly and report the sighting to local authorities, as invasive species are to be handled only by designated personnel.

While the presence of Horseshoe Snakes may be unsettling for some, experts reassure the public that these snakes are not a direct threat to humans and generally avoid contact. Nonetheless, as the population of these reptiles continues to grow, residents and visitors alike will need to adapt to this new reality on the island.


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