Holvika ungdomsskole
| Species | Scientific name | 1993 | 1994 |
|---|---|---|---|
| Reker, tanglopper o.a krepsdyr | Crustacea Samlegruppe | 8 | 6 |
| Sjøfugl | Aves Sjøfugl | 8 | 5 |
| Bladder Wrack | Fucus vesiculosus | 11 | 6 |
| Blåskjell | Mytilus edulis | 7 | 8 |
| Fjæremark | Arenicola marina | 1 | |
| Glassmanet | Aurelia aurita | 8 | 5 |
| Grisetang | Ascophyllum nodosum | 6 | 2 |
| Japansk drivtang | Sargassum muticum | 7 | 3 |
| O-skjell | Modiolus modiolus | 1 | 2 |
| Purpursnegl | Nucella lapillus | 5 | 2 |
| Rød brennmanet | Cyanea capillata | 9 | 8 |
| Serrated Wrack | Fucus serratus | 4 | |
| Chanelled Wrack | Pelvetia canaliculata | 1 | |
| Ålegras | Zostera marina | 4 | 4 |
| Albusnegl | Patella sp. | 2 | |
| Strandsnegler | Littorina sp. | 10 | 14 |
| Tare | Laminaria sp. | 8 | 5 |
| Knivskjell | Solenidae indet. | 1 | |
| Lofamilien | Charadriidae indet. | 1 | 1 |
| Rur | Balanidae indet. | 7 | 5 |
| Krabber | Brachyura indet. | 9 | 8 |
| Beinfisk | Actinopterygii indet. | 7 | 2 |
| Starfish | Asteroidea indet. | 4 | 2 |
| Molluscs | Mollusca indet. | 6 | |
| Brown algae | Phaeophyta indet. | 6 | 11 |
| Green algae | Chlorophyta indet. | 10 | 3 |
| Red algae | Rhodophyta indet. | 1 |
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