Urticinopsis antarctica (Verrill 1922)

are preyed upon by

• Global Biotic Interactions: Heteronemertes longifissus (Hubrecht 1887)
• Global Biotic Interactions: Baseodiscus antarcticus Baylis 1915
• Global Biotic Interactions: Artedidraco lonnbergi Roule 1913
• Global Biotic Interactions: Parborlasia corrugatus (McIntosh 1876)
• Global Biotic Interactions: Dolloidraco longedorsalis Roule 1913

prey on

• Global Biotic Interactions: Clione limacina (Phipps 1774) (Sea Angel)
• Global Biotic Interactions: Sterechinus neumayeri (Meissner 1900) (Antarctic sea urchin)
• Global Biotic Interactions: Calanus propinquus Brady 1883
• Global Biotic Interactions: Beroe cucumis Fabricius 1780 (Sea gooseberry)
• Global Biotic Interactions: Limacina rangii (d'Orbigny 1835)