When Soren and I read books on a theme, I try to find a range of different kinds of books, each of which serve a particular purpose in that week's learning journey.
While Soren greatly enjoys long stories, I find that "baby" books like Usborne's Look and Say Beach board book provide us with a low-pressure opportunity for Soren to do the reading. No, he doesn't read the words, but he generates all the talking and I encourage him to make up a story. This book shows happy clay children and their beach fun with nothing but picture dictionary style key words.
Then I choose some books that employ elegant poetry that flows seamlessly. We read it all the way through, I don't leave an opening to stop and chat. If we want to do that, we can go back and just look at the pictures and talk about it. It stretches his attention span. It encourages him to sit still and just listen. It imparts a sense of respect for poetry and prose.
Hello Ocean by Pam Munoz Ryan is an absolutely beautiful book. A girl and her family visit her old friend, the ocean. Love of nature, the sand, the salty sea, the bright sky is a romance that even my two-year-old can start to understand.