Circadian Clocks in Sponges

Cool stuff! Bora from A Blog Around the Clock has posted an interesting piece giving evidence for biological clocks in the phylum Porifera, sponges if you will. It definitely worth a good reading. For instance, did you know that sponges can move!

"the whole animal rearranges itself as cells move over each other, pulling the spikules along."-Dr. Bora