Table 2.
Average number of specimens to set a composed sample and number of samples collected since July 2009 until the end of 2010. Availability of animals is dependent on their geographical distribution and ecology.
| Species | Number of Samples Collected from July 2009 till End 2010 | Average Number of Animals Collected to Set a Composed Sample |
|---|---|---|
| Gibbula umbilicalis | 34 | 100 |
| Gibbula magus | 1 | 90 |
| Monodonta lineata | 20 | 86 |
| Monodonta turbinata | 21 | 86 |
| Nucella lapillus | 13 | 15 |
| Littorina littorea | 2 | 10 |
| Littorina saxatilis | 4 | 15 |
| Ocenebra erinacea | 4 | 4 |
| Calliostoma zizyphinum | 1 | 1 |
| Patella intermedia | 4 | 15 |
| Charonia lampas | 5 | 1 |
| Mytilus galloprovincialis | 7 | 30 |
| Paracentrotus lividus | 10 | 10 |
| Marthasterias glacialis | 8 | 1 |