Flounder and Sebastian are two of the most beloved characters from The Little Mermaid. Flounder is a round and cheerful fish with a vibrant blue body and cheerful yellow fins. He has two round eyes and a small mouth. Sebastian, on the other hand, is a small, friendly red crab with two big eyes and a wide happy smile. His impressive claws make him look like a true regal figure. Both characters are swimming in the deep, blue ocean. To color this image, I would recommend using brighter tones for Flounder, like light blue and yellow, and darker tones for Sebastian, like dark red and orange. This will help to create the perfect contrast and add an extra layer of realism to the image. For the ocean, I suggest a spectrum of blues and greens, tracing the sunlight reflecting on the water. Finally, light shades of pink, orange and yellow can be used for the details, like the bubbles, for a playful and charming touch.