Adult coloring books are growing in popularity because thousands of people find it relaxing, helps you decompress, and let their inner child out to play while opening up creativity. Many of the books on the market are centered on patterns but we cater to you reef lovers. They are a little more detailed than a child's book but also designed for you to interpret the colors as you want to see them. These pages were patterned for you to enjoy your free time diving into one of your passions, the ocean. You should not be limited to the color palette you see in your tank or on your next reef dive. Pick a color at random and jump in. Now we understand that many adults probably haven't colored a page in over 20 years. Crayons were great as a child but grown ups should probably use grown up materials. So we recommend colored pencils as you can blend them to make realistic works of art. Colored pencils can get into the fine areas that a crayon is too thick to fill. We favor Prismacolor Colored Pencils for their smooth blendable and layerable results. The key is to go in lightly and build up color slowly instead of pressing hard. Art markers would be another high end choice as they leave a brilliant color that jumps off the page but may take a little longer to learn to when it comes to shading. If using markers, we recommend a sheet of paper behind the page you are coloring to ensure no bleed through. You can also use Watercolor Pencils. We suggest removing the page and taping it to a clean hard surface like glass after you have colored the page. Then you can apply clean water to the page with a small brush. Be careful how you mix areas. For instance, if too much water blends a red into a green... it's going to turn brown. The effects with some practice can be amazing and is a great way to learn how to paint in watercolor. The most spectacular aspect of a coloring book is no two people will color a page exactly the same. It becomes your art. So get creative, do something different but most of all have fun in your spare time. THE AMAZING REEF COLOR BOOK