The Sunda Strait, a critical waterway connecting the Indian Ocean to the Java Sea, faces an escalating marine pollution crisis. This paper, titled "ACİL SUNDA X," highlights the urgent need for attention and action to mitigate the severe environmental consequences threatening the region. We examine the current state of pollution, its sources, and impacts on marine life and human communities. We also propose immediate measures and long-term strategies to alleviate this pressing issue.