Common name: Ragworms

Phyllodocida is an order of polychaete worms, commonly known as ragworms, clam worms, scale worms, and eunicids. These worms are characterized by their elongated bodies, segmented with parapodia (lateral appendages) that aid in locomotion. Many species within this order are benthic, living in or on the seabed, and are important for the marine ecosystem as they participate in the sediment turnover and serve as prey for various marine animals. In reef aquariums, some smaller species of scale worms can be beneficial detritivores, helping to clean up waste. However, larger predatory species may pose a threat to other invertebrates and should be monitored or avoided.

1. 
   Common name: King Ragworm

   Scientific name: Alitta virens
2. Common name: Green Leaf Worm

   Scientific name: Eulalia viridis
3. Common name: Unicorn Worm

   Scientific name: Glycera unicornis
4. 
   Common name: Sponge Worm

   Scientific name: Haplosyllis spongicola
5. 
   Common name: Scale Worm

   Scientific name: Lepidonotus clava
6. Common name: Slender Ragworm

   Scientific name: Nereis pelagica
7. Common name: Clam Worm

   Scientific name: Nereis vexillosa
8. 
   Common name: Bristle Worm

   Scientific name: Phyllodoce lamelligera