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Annelida
WORMS; LEECHES
Life   Annelida

IDnature guides

Kinds
Overview
Annelids are segmented worms that can be found in marine, freshwater and terrestrial habitats. Structurally, annelids are quite advanced despite their simple appearance. They have a closed circulatory system, highly developed internal organs, a complete digestive system and nervous system, and some species even have highly developed eyes. They achieve locomotion by alternating the contraction of circular and longitudinal muscles. These contractions are also responsible for the odd wriggling movements of worms when crossing sidewalks. Annelids range from being filter feeders to predators.

Phylogeny

Annelida -- segmented worms

Photographs
Front Worms
Front Worms

Links to other sites

References

Acknowledgements
John Pickering
University of Georgia, Athens


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Updated: 2017-05-28 01:07:32 gmt
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