Non-indigenous species
There are ten non-indigenous species (NIS) reported from the Norwegian Sea with two (Pacific salmon,
Oncorhynchus gorbuscha and the dinoflagellate
Karenia mikimotoi) established in open parts of the sea. In addition, the invasive comb jelly (
Mnemiopsis leidyi) has been occasionally observed (last in 2014). Most NIS have been reported from coastal regions where monitoring is in place. In general, the Norwegian Sea ecoregion is relatively poorly monitored for NIS, and there are therefore uncertainties associated with the occurrence of NIS in the ecoregion.
Threatened and declining species and habitats
Table
1: Threatened
and declining species in the Norwegian Sea, according to OSPAR.
| SCIENTIFIC NAME | COMMON NAME |
| INVERTEBRATES |
Nucella lapillus
Ostrea edulis | Dog whelk
Flat Oyster
|
| SEABIRDS | |
| Larus fuscus fuscus | Lesser black-backed gull |
| Pagophila eburnea | Ivory gull |
| Rissa tridactyla | Black-legged kittiwake |
| Uria lomvia | Thick-billed murre (or Brünnich's guillemot) |
| FISH |
| Anguilla anguilla | European eel |
| Cetorhinus maximus | Basking shark |
| Dipturus batis | Common skate |
| Lamna nasus | Porbeagle |
| Petromyzon marinus | Sea lamprey |
| Salmo salar | Salmon |
| Squalus acanthias | [Northeast Atlantic] spurdog |
| MARINE MAMMALS |
Balaenoptera musculus
Balen mysticetus | Blue whale
Bowhead Whale
|
| Eubalaena glacialis | Northern right whale |
| Phocoena phocoena | Harbour porpoise |
Table 2: Threatened and declining habitats in the Norwegian Sea, according to OSPAR.
| HABITATS |
| Coral gardens |
| Deep-sea sponge aggregations |
| Intertidal mudflats |
| Lophelia pertusa reefs |
| Modiolus modiolus beds |
Seamounts
|
| Zostera beds |
