"Amanchu! Advance" is a Japanese anime series that serves as a sequel to the original Amanchu!. It follows the adventures of Pikari and Teko, two high school girls who share a passion for diving and the ocean. The series explores their growth, friendships, and experiences as they navigate the challenges of adolescence while deepening their love for the underwater world. The show is known for its beautiful animation and calming atmosphere, highlighting the beauty of marine life and the importance of friendship. It emphasizes themes of self-discovery and the joy of pursuing one's passions, making it a heartwarming watch for fans of slice-of-life stories.