Facts about Giant Squid Eyes

1. 06

   Photoreceptors in giant squid eyes are sensitive to blue-green wavelengths, the spectrum of light that penetrates deepest into ocean water.

   Giant Squid EyesJun 8sharebiologyvisionadaptation
2. 05

   Giant squid eyes are front-facing, giving them binocular overlap that helps judge distances in the dim mesopelagic and bathypelagic zones.

   Giant Squid EyesJun 7sharebiologyvisionanatomy
3. 04

   Each giant squid eye has a rigid, spherical lens rather than a flexible one, a structural feature common among cephalopods.

   Giant Squid EyesJun 7sharebiologyanatomycephalopods
4. 03

   Unusually large pupils in giant squid eyes allow maximum light intake, an adaptation scientists believe helps spot the bioluminescent wake of sperm whale predators.

   Giant Squid EyesJun 7shareanatomyadaptationvision
5. 02

   A giant squid's eyes can reach up to 30 centimeters in diameter, roughly the size of a dinner plate.

   Giant Squid EyesJun 7shareanatomymeasurementbiology
6. 01

   The eyes of giant squids are the largest of any living animal, enabling them to detect bioluminescence and predators in the deep ocean.

   Giant Squid EyesJun 7sharebiologyanatomyvision