Flatworms can still 'see' even after they are decapitated | New Scientist - 0 views
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Lottie Peppers on 31 Jul 17Off with their heads. Light-averse planarian flatworms, known for their incredible ability to regenerate lost body parts, shy away from light even after they have been decapitated. This suggests they have evolved a second way to respond to light that doesn't involve eyes. Planarian flatworms, which often live in dark, watery environments shielded from direct light, don't have complex eyes like we do. But many do have two lensless, primitive "eyespots" on their heads that can detect the intensity of light.
