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What is the Largest Squid? A Squid Size Comparison Chart

Squid size comparison chart: Lycoteuthis springeri (10-12cm), Leachia atlantica (up to 12cm), Promachoteuthis sp. (up to 5cm), Batoteuthis scolops (up to 20cm).
(Kim Moeller/Smithsonian Institution)

Squids come in a wide range of sizes but despite differences in size and shape, all work basically the same way inside. More about the giant squid can be found in the Giant Squid section.