Art therapy at Coloring-for-Kids.com: Coloring Page Mermaid and Crab – online game and coloring book for free download of drawings for printing and subsequent coloring on paper. Coloring is an effective tool for the development of a child, ensuring his independent leisure or organizing an exciting pastime with his parents. Share the work of a young artist with family and close friends or keep it as a keepsake. Creative Commons Attribution-NonCommercial 4.0 License. Author of the work: Persimmons Studio.