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http://news.yahoo.com/s/afp/20081119/sc_...tswSm7NsH9xieAA First, the pigment cell absorbs light and casts a shadow over the photoreceptor cell. The shape of the shadow varies according to the position of the light source.
The photoreceptor cell then converts this light signal into electricity, sending it in a signal along a nerve that connects to a band of cells endowed with thin hairs, called cilia, that beat to displace water.
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If you can read this ... thank a teacher. Since it's in english ... thank our military! Ric
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