| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| C | 2004-02-20 | Batten Bay, Plymouth, Rocky shore with boulders |
Common, in gully and on rocks of lower shore, often growing attached to larger seaweeds. | Palmaria palmata |
| P | 2004-02-20 | Batten Bay, Plymouth, Rocky shore with boulders |
15-20 found clinging to the underside of boulders and in crevices | Porcellana platycheles |
| F | 2004-02-20 | Batten Bay, Plymouth, Rocky shore with boulders |
Frequent, growing on exposed areas of rocks and in rockpools | Osmundea pinnatifida |