WHY IS THE HEAD OF A DRAGONFLY FULL OF EYES?
The eyes of a dragonfly don't see a complete picture, the way human eyes do, but patterns, shapes, movements, and contrasts. Its eyes are sensitive—comprising of up to 30,000 hexagonal units, each functioning like an eye within an eye— to enable it to see prey such as a mosquito even in dim light. Almost 80% of its brain activity is devoted to eyesight, which allows it to see a mosquito flying about 20 meters away (approximately 60 feet).
Its eyes also enable it to dart through blades of grass at high speeds without colliding into them. It can see up to 100 distinct images per second, which is five times the capacity of a human eye. Dragonflies make a mockery of ordinary movie cameras, which project only 24 images per second.
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