Phylum Annelids are segmented worms, true coelom. It includes: Earthworms, marine warm, leeches.
-Annelida means "little rings"
-Its body divided into segments seperated by septum ( septum=internal walls)
-some have bristles called setae on each segment.
-it has closed circulatory system.
-have well developed nervous system with brain and nerve cords
-sexual reproduction, some are hermaphrodites