| italy | | uncultured candidatus endobugula sp. | species | 2 | 0 |
| spain | balearic islands | uncultured candidatus endobugula sp. | species | 1 | 0 |
| united states | california | candidatus endobugula | genus | 0 | 1 |
| united states | florida | candidatus endobugula sertula | species | 1 | 0 |
| united states | florida | uncultured candidatus endobugula sp. | species | 1 | 0 |
| united states | north carolina | candidatus endobugula sertula | species | 117 | 0 |
| united states | south carolina | candidatus endobugula sertula | species | 4 | 0 |
| united states | virginia | candidatus endobugula sertula | species | 1 | 0 |
| united states | washington | endosymbiont of bugula pacifica | species | 1 | 0 |