Seastars are quite strange creatures in the sense as they do not have a brain, eyes or a spine. Seastars have a complex nervous system which is able to interpret - light, temperature, touch and water parameters. They have no specific sensory organs (eyes, ears etc.) for these functions.
http://www.marineaquariumsa.com/wiki/index.php?title=Seastars
zaterdag 25 april 2009
Seastar
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