synaptula , a holothurian ( sand gobbler family)these were common on the underside of beautiful purple sponges on escape reef.
![Because they reproduce asexually social feather duster worms [Bispira brunnea] are usually found, as pictured here, in clusters. Bahamas. segmented polychaeta sedentaria sabellidae invertebrate Caribbean | Mira Images](https://i.pinimg.com/originals/9c/a6/39/9ca6399a451f683b0c3df48e2748b9a3.jpg)
