Etch Art Secret Sea Activity Book

Secret Sea Etching book by EtchArt. Amazed by the colors and keen on an activity book for my daughter, I bought this book many years ago as a gift. She never used it so, the pen is still sealed in the book. The eight pages are unmarked but there is a edge crease from being put in the bookcase wrong. Lower left on the back of the book. I thought it would be a fun and interesting activity for an eight year old.