Mary, an adventurous girl, embarks on an exciting expedition with her new friend, a dog she calls Frau. Together, they explore a natural paradise, discovering crabs, herons, and other exotic animals. In their quest to find the most extraordinary sea creature, they dive into an underwater world of coral reefs, encountering fascinating marine creatures and unexpected challenges. Their adventure teaches them many things about nature, bravery, and friendship. IMPLICIT VALUES: Story that highlights curiosity and respect for nature, showcasing the biodiversity of an underwater world. It reinforces courage and resilience in the face of the unknown, while emphasizing the importance of friendship and teamwork. Mary and Frau demonstrate that, with bravery and companionship, great challenges can be overcome, teaching children to appreciate and care for our natural world.