design for children book about ocean

We need to create a design for a children's encyclopedia book about the ocean and its inhabitants. We have the text ready and dividing it into chapters. Also we will add photos to be placed in each chapter. It will be necessary to draw additional illustrations and the general design of the pages, use some elements of the text in the schemes, and also for the text to interact with the pictures, we will later give examples of books that suit us. The design should be bright and as interesting as possible for children.