Site: Helgeroafjorden
| Species | Scientific name | 1993 |
|---|---|---|
| Blåskjell | Mytilus edulis | 5 |
| Tårnsnegl | Turritella communis | 1 |
| Vanlig sandskjell | Mya arenaria | 2 |
| Balanus sp. | 3 | |
| Knivskjell | Ensis sp. | 4 |
| Pelikanfotsnegler | Aporrhais sp. | 4 |
| Strandsnegler | Littorina sp. | 4 |
| Eremittkreps | Paguridae indet. | 4 |
| Hjertemuslinger | Cardiidae indet. | 1 |
| Reker | Crangonidae indet. | 3 |
| Krabber | Brachyura indet. | 4 |
| Fureflagellater | Dinophyceae indet. | 1 |
| Kiselalger | Bacillariophyceae indet. | 1 |
| Chiton | Polyplacophora indet. | 3 |
| Mangebørstemark | Polychaeta indet. | 3 |
| Hydrozoans | Hydrozoa indet. | 4 |
| Sea urchins | Echinoidea indet. | 4 |
| Starfish | Asteroidea indet. | 4 |
| Brittle stars | Ophiuroidea indet. | 4 |
| Kappedyr | Urochordata indet. | 1 |
| Krepsdyr | Crustacea indet. | 1 |
| Brown algae | Phaeophyta indet. | 4 |
| Green algae | Chlorophyta indet. | 1 |
| Bryozoans | Bryozoa indet. | 4 |
| Coelenterates | Cnidaria indet. | 1 |
| Red algae | Rhodophyta indet. | 4 |
| Sponges | Porifera indet. | 3 |
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