PHYLUM ANNELIDA – segmented worms. Biology 112. Annelids. Representative species: common earthworm. Longest Earthworm found in Australia 12 feet long and thick as a coke can. Annelids. Have a coelom – fluid filled body cavity surrounded by a mesoderm (room for organs)
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``It may be doubted whether there are any other animals which have played so important a part in the history of the world as the earthworm.``
-Charles Darwin, 1881
Planktonic Polychaete Worm