New research suggests that the impact of global marine protected areas (MPAs)—regions where human activity is restricted to protect marine life—may be much less effective than previously believed. While governments have been working to meet international conservation goals, such as the "30 by 30" initiative, which aims to protect 30% of the ocean by 2030, the actual recovery of marine ecosystems within these protected zones is limited. Although about 10% of the ocean is officially designated as protected, studies analyzing biodiversity data from thousands of shallow coral and rocky reefs around the world show that less than 2% of the ocean is in MPAs where ecosystems are truly recovering. The findings rely on the assumption that fishing regulations are being followed within these protected areas. However, in practice, many MPAs may not be fully enforced. Continued fishing activity within these zones can prevent the recovery of marine life, undermining the purpose of the protection. This lack of enforcement and monitoring can lead to overfishing and habitat degradation, even in areas that are supposed to be safe havens for marine species. The research underscores the need for stronger enforcement of fishing rules and more consistent monitoring of marine species, both inside and outside protected areas. Without these measures, the effectiveness of MPAs in preserving biodiversity and supporting ocean health may remain limited. Scientists emphasize that while MPAs are an important tool for conservation, their success depends on strict adherence to regulations and active management. Experts are calling for a reevaluation of current conservation strategies to ensure that MPAs are not just symbolic but are actually contributing to the recovery of marine ecosystems. This includes investing in better monitoring technology, increasing funding for enforcement, and improving international cooperation to ensure that marine protection efforts are both comprehensive and effective.