This calming underwater scene is filled with a variety of marine life and colors. There is a school of brightly colored fish moving in graceful motions, coral swaying in the current, and a majestic turtle hovering by. The colors of the scene create an overall tranquil effect and could provide a peaceful and calming activity for anyone who colors it. To bring this underwater world to life, I would start by filling the background with light blues and purples. Then, I would choose brighter colors like pink and orange for the fish, greens, yellows, and reds for the coral, and different shades of brown and green for the turtle. Finally, adding some details like white tips of the fins and highlights on the scales could make this underwater world even more vibrant.