Halsnøy skule
| Species | Scientific name | 2007 | 2019 |
|---|---|---|---|
| Albusnegl | Patella vulgata | 1 | |
| Downy Birch | Betula pubescens | 1 | |
| Bladder Wrack | Fucus vesiculosus | 1 | |
| Colt's-foot | Tussilago farfara | 1 | |
| Serrated Wrack | Fucus serratus | 1 | |
| Goat Willow | Salix caprea | 1 | |
| Strandkrabbe | Carcinus maenas | 1 | |
| Eurasian Oystercatcher | Haematopus ostralegus | 1 | |
| Northern Lapwing | Vanellus vanellus | 1 | |
| Eremittkreps | Paguridae indet. | 1 | |
| Hjertemuslinger | Cardiidae indet. | 1 | |
| Bivalve mollusc | Bivalvia indet. | 1 |
