These photos are from: http://imgsoup.com/1/annelids/ http://creaturecast.org/archives/category/annelids http://www.gardenbuildingsdirect.co.uk/blog/annelid-resources/ http://myscienceacademy.org/2012/09/25/coloured-scanning-electron-micrograph-sem-of-an-annelid-segmented-worm/ | Any segmented worm of the phylum Annelida, including the earthworms, leeches, and various marine forms. invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided into segments by transverse rings, or annulations, from which they take their name. The coelom is reduced in leeches, and setae are lacking a few specialized forms, including leeches. A major invertebrate phylum of the animal kingdom, the annelids number more than 9,000 species distributed among three classes: the marine worms(free-moving or sedentary), the earthworms, and the leeches. |