Plural of eyespot; multiple simple eye-like structures or markings.
From 'eye' + 'spot' (plural -s). The plural form of the scientific compound term for primitive visual organs.
Eyespots are found everywhere from flatworms to moths, and they're a window into how eyes evolved—the simplest eyespots are just light-sensitive cells, showing that 'seeing' doesn't require the complex eye you're using right now.
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