About the Book: In this delightful story from the Iris and Walter series, best friends Iris and Walter eagerly anticipate their class field trip to the aquarium. They’re excited to see sharks, angelfish, and penguins—but when Walter gets separated from the group, it’s up to Iris to find him and bring him back. This heartwarming tale highlights the value of friendship and teamwork, showing that having a best friend by your side makes everything easier