Families who loved Tommy Treasure and the Quest for the Sunken Sapphire by Yauheni Kostyshau often look for books with a similar feel. These 20 recommendations were selected for their similarity in style, theme, and reading level.

Reach for this book when your child is feeling curious about the world but perhaps a bit hesitant to step outside their comfort zone. It is a perfect choice for encouraging a sense of adventure and showing that the unknown can be more magical than scary. The story follows Tommy as he dives deep into the ocean to find a legendary treasure, encountering vibrant marine life and overcoming the natural jitters that come with exploring new environments. While the primary draw is the underwater mystery, the heart of the book lies in the emotional journey of building confidence. At 35 pages, it is a manageable read for preschool and early elementary children, offering enough excitement to keep them engaged without being overly complex. Parents will appreciate the way it frames discovery as a reward for bravery, making it a wonderful bedtime story for little dreamers who love the ocean.