Check out this timely new post from Creaturecast on how sea urchins use photoreceptors all over their body to form visual images. There are also some nice photos of tube feet.
It points out how much more there is to learn about common marine organisms, simply because no-one has thought to look.
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Sea urchins! Whooo!
ReplyDelete(I really like sea urchins. I think they look freakin' sweet.)