- Statement 1: Reducing marine debris (especially plastic) is a central goal for numerous initiatives aimed at cleaning the ocean. The specific percentage (20-50%) might refer to a target from a specific, potentially lesser-known, manifesto or proposal, but the goal itself is prominent. - Statement 2: Implementing a comprehensive monitoring system is essential for assessing the state of the ocean, tracking pollution, and evaluating the effectiveness of cleanup efforts. A high-tech, potentially globe- circling, system aligns with the need for robust data collection. - Statement 3: Protecting polar regions and addressing climate change impacts like sea- level rise ("preventing ocean high levels") are crucial for ocean health but fall more under the broader scope of climate action and conservation rather than solely a "Clean Ocean" focus, which often emphasizes pollution and debris. The phrasing "preventing ocean high levels" is also unusual.