New research from Edith Cowan University (ECU) proposes a biosecurity strategy aimed at protecting the fragile marine ecosystems of the Galápagos Islands from invasive species, which are increasingly transported by tourist vessels. Led by Professor Marnie Campbell, the study emphasizes the need for a balanced approach that maintains tourism while safeguarding local wildlife. By zoning vessel routes into 'neighborhoods' based on geographic and sea-surface temperature similarities, the risk of invasive species spreading between islands can be significantly reduced. The study highlights that if an invasive species is detected, cross-neighborhood travel can be temporarily halted, allowing for rapid containment without disrupting tourism within the affected area. This method is designed to be simple, scalable, and applicable to island regions worldwide, showcasing how mathematical modeling and environmental data can create effective biosecurity systems. The findings are published in the journal iScience, underscoring the urgent need for innovative solutions to protect vulnerable marine environments.