 The common fire worm, Eurythoe complanata | The Phylum Annelida makes up the true worms, which are segmented internaly as well as externally. Two examples are shown here. The upper example is the polychaete Eurythoe complanata or common fireworm. These can bite and some people have had serious infections develop. |
 The fan worm, Bispira rugosa |
Below, is another polychaet, this one live by sieving detritus and ver small organisms from the water. It is the panamic fanworm, Bispira rugosa. Its segmentation is not at all obvious because the body of the animal lives in a tube. |