Which Animal Has the Largest Eyes in the World
The giant squid has the largest eyes of any living animal. Its eyes can reach about 27 centimeters (10.6 inches) in diameter, roughly the size of a dinner plate. This makes the giant squid the clear answer to what has the largest eyes in the world.
Why Giant Squid Eyes Are So Large
Giant squid eyes evolved to detect faint light and movement in deep ocean waters. Large eyes help them spot predators like sperm whales in near-total darkness. According to research published in Current Biology, this extreme eye size is an adaptation to low-light environments.
How Giant Squid Eyes Compare to Other Animals
While the giant squid holds the record, other animals also have impressively large eyes. The blue whale has eyes about 15 centimeters across, and ostriches have the largest eyes of any land vertebrate at around 5 centimeters. Still, neither matches the scale of the giant squid.
For more details on deep-sea creatures and eye size, visit National Geographic.
