Question
Which animal has the largest eyes?
By:Nerdy Trivia
Last updated: February 22, 2026
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Chameleons can look in two directions at once, which seems useful. Tarsiers have eyes bigger than their brains, which seems like poor planning. Evolution clearly had fun with eyeballs. Which animal has the largest eyes?
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Correct Answer: Colossal squid
(Source)Blue whale eyes are about the size of a grapefruit, which sounds impressive until you meet the colossal squid. Its eyes are roughly the size of a basketball, and scientists think they evolved to spot approaching sperm whales by detecting the faint glow of disturbed bioluminescent plankton. Imagine evolving dinner plate-sized eyeballs just to see your predator's appetizer.
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