Narrative

Marine Worms (Polychaeta Class) contains about 6,000 aquatic species of segmented worms, most of which are marine animals. Some species have colorful arrays of gills that wave in the water and can be retracted quickly when danger is near.

Class Polychaeta is divided into two major and one minor order as follows:

Order Errantia - Free-swimming marine
Order Sedentaria - Non-mobile marine
Order Archiamelida* - Non-bristly marine

The last order, Archiamelida, can be treated as a separate class in the Segmented Worms Phylum (Annelida).

Taxonomy

References