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Bigeyes refer to a group of animals characterized by having disproportionately large eyes in relation to their body size. These large eyes are believed to provide enhanced vision in low light conditions, allowing these animals to see better in the dark. Bigeyes can be found in various species of fish, birds, and mammals, and are often associated with nocturnal or deep-sea environments. The oversized eyes of bigeyes are an evolutionary adaptation that aids in hunting, navigation, and communication within their respective habitats.