Group 1 - The event was organized by the Qinhuangdao Marine Center, focusing on enhancing public scientific literacy and emphasizing marine ecological protection [1][2] - Key topics included marine disaster monitoring, disaster prevention and reduction, and water safety for coastal tourism [1][2] - Various educational materials were distributed, including marine science handbooks and eco-friendly bags, to convey marine knowledge in an accessible manner [2] Group 2 - The event featured displays on marine disasters such as red tides, green tides, and storm surges, highlighting their causes, impacts, and prevention measures [1][2] - Emphasis was placed on the importance of typical ecosystems like oyster reefs and seagrass beds in water quality purification and biodiversity maintenance [2] - Safety demonstrations were conducted to educate the public on proper life jacket use and drowning prevention principles [2]