This realistic underwater photography was taken in the waters around Hawaii. The main subject is a green sea turtle swimming leisurely in deep blue seawater. It raises its head and stretches two flippers, with unique textures of skin and shell clearly visible. Sunlight penetrates from the sea surface behind it to form a soft halo, creating a quiet and healing atmosphere. Green sea turtles are representative protected marine animals in Hawaii, regarded as "messengers of the sea" in local native culture, symbolizing longevity and good luck. This work is often used as science popularization material and ocean-themed wallpaper, calling on public to protect marine ecology.