Meet the dolphins, the clever and playful mammals that love to jump and swim together in the waves. Discover their intelligence and how they communicate with one another.Dive into the world of sea turtles, ancient and gentle creatures that travel long distances across the oceans. Learn about their important role in keeping the marine ecosystems healthy.Whether you are a curious explorer or simply captivated by marine life, this book will take you on an unforgettable journey through the wonders of the underwater world.