| united states | california | membranipora chesapeakensis | species | 16 | 0 |
| united states | florida | membranipora chesapeakensis | species | 5 | 0 |
| united states | maryland | membranipora chesapeakensis | species | 2 | 0 |
| united states | virginia | membranipora chesapeakensis | species | 8 | 0 |
| united states | washington | membranipora chesapeakensis | species | 2 | 0 |