Manta rays possess the largest brain of any fish, with a disproportionately large brain-to-body ratio and well-developed areas for learning, memory, and problem-solving, suggesting high intelligence, self-awareness, and complex social behavior, making them sentient animals capable of recognizing themselves in mirrors, unlike most other fish. Their large cerebrums, cerebellums, and a warm-brain circulatory network (rete mirabile) support rapid processing and complex decisions, enabling intricate