The smallest squid eye is about 15 millimeters, while the largest squid eye can get up to 11 inches in diameter.
Squid eyes are like human eyes since they have two camera-type eyes. However, they have photoreceptors at the front of the eye, instead of at the back, allowing them to see in dimly lit ocean waters.
Squid eyes have evolved and adapted over time as a deep-sea arms race. These keen eyes help squid hunt, stay alive and communicate with one another in some cases.
There are over 300 species of squid inhabiting every ocean on Earth and these creatures boast truly remarkable eyes. Living in the depths of the ocean means their vision is highly adapted to hunting, navigating, and communicating in low-light environment.
Unsurprisingly, given the wide variation in species of squid the size of their eyes differs greatly.
Pygmy squid eye. (Image Credit: Mike Workman/Shutterstock)
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