Core Viewpoint - The event "Technology Deep Sea: Little Hands Protect the Sea" successfully concluded, emphasizing the importance of marine ecological monitoring and protection among children [2] Group 1: Event Overview - The event was organized by the National Ocean Technology Center in collaboration with Tianjin Library, featuring 20 young participants from various schools [2] - Activities included a "Marine Ecological Monitoring Classroom" where children learned about modern marine monitoring technologies [2] Group 2: Educational Activities - A course titled "Conducting a Physical Examination for the Ocean" was led by youth expert Wang Xueying, focusing on water quality testing and various monitoring techniques [2] - The "DIY Machine Fish" segment was particularly popular, allowing children to assemble biomimetic fish models using eco-friendly materials while learning about buoyancy and propulsion principles [2] Group 3: Commitment to Marine Protection - At the end of the event, participants collectively recited the "Marine Protection Commitment" [2] - Library staff recommended marine science books and exhibitions to encourage continued exploration beyond the classroom [2] - Children expressed a deeper understanding that "protecting the ocean is not just a slogan, but an action" [2]