卡通手绘风海底世界鱼类珊瑚水母海洋生态场景插画

cartoon illustration, blue and green color scheme, light blue, dark blue, green, yellow, and a touch of red, marine life including red and blue fish, transparent blue jellyfish, gray shark, green and brown seaweed and coral, fish and jellyfish swimming in the middle and lower parts, shark swimming in the upper part, seaweed and coral at the bottom, decorative elements like wave textures, cloud shapes, and sandy seabed, background with blue sky and white clouds above, rough sea in the middle, and calm underwater world below, bright and lively visual effect, conveying a relaxed and exploratory mood