A Menina Do Mar by Sophia de Mello Breyner

In this enchanting tale, a young boy discovers a mysterious girl who lives by the sea, and the two form an unlikely friendship that transcends the boundaries of land and water. As they share stories and adventures, the boy learns about the girl's magical world beneath the waves, filled with vibrant sea creatures and hidden wonders. Their bond highlights themes of curiosity, understanding, and the beauty of different worlds coming together, ultimately teaching the boy valuable lessons about love, acceptance, and the power of imagination.