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Echinology (SEA URCHINS & SAND DOLLARS) with Rich Mooi
Ologies with Alie Ward
Do Sea Urchins Have a Brain?
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Lee wants to know, do sea urchins have a brain? And how do they walk with those spikes? Ah, ok, well that's actually two n no. I the sea urchin do not have a brain. Ifact it's probably stretching the definition of a ganglion to say that they have ganglia. They have little nerve clusters here and there. There's so much nerve tissue you can't help but think that if there's not thinking going on, at least there's some co ordination.
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