Feather duster worms reproduce both sexually and asexually. Sexual reproduction involves the release of gametes into the water where the fertilized eggs develop into free-swimming larvae that eventually settle in an appropriate habitat. In the case of Serpulids, they settle on corals and the coral grows around the calcareous tube they build, making asexual reproduction nearly an impossibility for them. Soft tube varieties reproduce sexually, but many form dense colonies of clones by a budding process called scissipary. In this process the posterior end of the worm breaks off and develops a new crown while the "parent" grows a new posterior.
Sent from my SPH-L710 using Aquarium Advice mobile app