| Site | Sample name | Shannon (species diversity) | Chao1 (species abundance) |
| Voordelta | Seawater | 4.60 | 312 |
| Rock | 5.95 | 3245 | |
| Reef | 5.53 | 2668 | |
| Sediment | 6.26 | 3097 | |
| O. edulis—Rock | 6.05 | 3451 | |
| O. edulis—Reef | 5.98 | 3061 | |
| Duikplaats | Seawater | 3.09 | 85 |
| Rock | 5.53 | 2668 | |
| Sediment | 6.13 | 2661 | |
| C. gigas | 5.71 | 2862 | |
| Dansk Skaldyrcentre | Seawater | 4.17 | 1256 |
| Basket | 6.37 | 3660 | |
| Sediment | 6.62 | 4001 | |
| O. edulis | 5.77 | 3063 | |
| Duikplaats | Seawater | 3.09 | 85 |