Enchanted Sea - Mermaid Coloring Book in Grayscale contains 40 mermaid illustrations by Molly Harrison, all ready for you to add color These images are in GRAYSCALE, which differs from line art in that all the values from black to white are included. These images look beautiful when mediums such as Copic markers, Prismacolor markers (and other alcohol based markers), and colored pencils are used. Gel pen really livens up the pages with highlights and accents but it is not recommended to use them over the entire page as it is too opaque and the gradients of the shading will not show through. This book is intended for adults but kids ages 8 and up will enjoy it too (depending on individual skill). This coloring book is the perfect gift for any mermaid lover Please see Molly's other coloring books here on Amazon and if you prefer digital downloads, please visit The Fantasy Art of Molly Harrison: Official Gallery and Shop at www.mollyharrisonart.com.