The Sea Fairies is a children's fantasy novel by L. Frank Baum, first published in 1911. The story is set in the magical underwater world of the mermaids and follows the adventures of a young girl named Mayre Griffiths and her friend Trot. The novel begins with Mayre and Trot visiting their friend Cap'n Bill on his houseboat. Cap'n Bill tells them stories of his adventures on the sea and introduces them to his pet mermaid, a beautiful creature named Merla. One day, while exploring the seashore, Mayre and Trot are magically transported to the underwater world of the mermaids. There they meet King Anko, the ruler of the mermaids, and his daughter, Princess Clia. As Mayre and Trot explore the wondrous underwater kingdom, they learn about the mermaids' way of life and the many creatures that inhabit the sea. They also encounter several challenges and obstacles, including a group of wicked sea devils who seek to overthrow the mermaids and claim the sea for themselves. As they navigate through the dangers of the underwater world, Mayre and Trot learn valuable lessons about courage, friendship, and the importance of protecting the environment. They eventually help the mermaids defeat the sea devils and return home to tell Cap'n Bill of their incredible adventure. The novel is a fun and exciting adventure for children, filled with magic and imagination. It explores themes such as the importance of environmental conservation, the rewards of friendship, and the power of determination. Ultimately, The Sea Fairies is a heartwarming tale that teaches children valuable lessons about life and the importance of respecting and preserving the natural world.