Scientists say climate change is heating the Mediterranean Sea, inviting invasive fish species that harm native populations. This threatens coastal communities that rely on traditional fishing. The Mediterranean is a climate change "hot spot," with waters expected to warm significantly by 2100. Invasive species like the spotted puffer fish and lionfish are spreading, impacting local ecosystems. Experts suggest reducing fossil fuel use and enforcing international treaties to manage the situation. Some invasive species could be commercialized for economic benefit, but reversing the spread is considered too late. Efforts focus on mitigating impacts and restoring environments.