From tugs to tankers, and kayaks to container ships, there's much to see and learn about the vessels that travel from the Golden Gate Bridge through San Francisco Bay. San Francisco Boats on the Bay: A Voyage in Riddles is filled with fascinating stories, facts, and questions about twenty-four boats and ships seen in these waters. Through challenging riddles and photos, readers are given clues to help them identify each vessel. Add to this the vocabulary of mariners, mooring locations and boat-related creative activities, and it's full steam ahead into a colorful world of nautical wonders. Written for children, ages 5 to 12, San Francisco Boats on the Bay will spark the curiosity, imagination and critical thinking of children of all ages.