If you are looking to find new ways to ignite your children's imagination, a picture book on large sea creatures may be one of the better options. Large sea creatures such as whales, sharks, dolphins, and sea lions are not things that your child would come across in their day-to-day life and will expose them to the variety and diversity of life that is out there. Their imagination can be tested with these new and interesting creatures that can help to develop their critical thinking skills. Further, a picture book is easy and interesting for children to explore at any age.