Genus: Metridium
Systematics :
| Kingdom | Animals (Animalia) | |||||
| Phylum | Coelenterates (Cnidaria) | |||||
| Klasse | Sea anemones, corals (Anthozoa) | |||||
| Order | Sjøroser (Actinaria) | |||||
| Genus | Metridium | |||||
| Species | Sjønellik (Metridium senile) | |||||
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Responsible editor: Doris Jorde