Calanus finmarchicus

are eaten by

• Global Biotic Interactions: Limanda limanda (Linnaeus 1758) (Common Dab)
• Global Biotic Interactions: Onisimus glacialis (G. O. Sars 1900)
• Global Biotic Interactions: Gadus morhua Linnaeus 1758 (Atlantic cod)
• Global Biotic Interactions: Megaptera novaeangliae (Borowski 1781) (Bunch)
• Global Biotic Interactions: Mertensia ovum (Fabricius 1780) (Arctic comb jelly)

are parasitized by

• Global Biotic Interactions: Hysterothylacium aduncum (Rudolphi 1802) Deardorff & Overstreet 1981
• Global Biotic Interactions: Aporhynchus norvegicus (Olsson 1868) Nybelin 1918

are preyed upon by

• Global Biotic Interactions: Cyanea capillata (Linnaeus 1758) (Lion's Mane Jellyfish)

eat

• Global Biotic Interactions: Calanus finmarchicus
• Global Biotic Interactions: diatom ORGANIC-3

have endoparasite

• Global Biotic Interactions: Hysterothylacium aduncum (Rudolphi 1802) Deardorff & Overstreet 1981
• Global Biotic Interactions: Aporhynchus norvegicus (Olsson 1868) Nybelin 1918