Core Viewpoint - The article highlights a marine science education initiative in Shanghai, focusing on the impact of green tide caused by Enteromorpha prolifera (commonly known as "green algae") on marine ecosystems, aimed at raising awareness among students about ocean conservation and ecological balance [1][2]. Group 1: Marine Science Education Initiative - The initiative involves sending volunteers to teach marine science courses in various community summer programs in Shanghai's Hongkou District, emphasizing the characteristics and effects of green tide [1]. - Students engage in discussions and debates about whether green tide is beneficial or harmful to the marine environment, showcasing different perspectives on its ecological impact [1]. Group 2: Hands-on Learning and Environmental Advocacy - In a practical experiment, students simulate the accumulation of green tide on water surfaces, observing its effects on light penetration and potential consequences for marine life [2]. - The initiative encourages students to become "little ocean guardians," promoting environmental awareness and responsible water usage at home [2].