Ophioplinthus gelida (Koehler 1901)

are preyed upon by

• Global Biotic Interactions: Glyptonotus antarcticus Eights 1852 (Giant Antarctic isopod)
• Global Biotic Interactions: Paramoera walkeri (Stebbing 1906)
• Global Biotic Interactions: Harmothoe spinosa Kinberg 1856
• Global Biotic Interactions: Labidiaster annulatus Sladen 1889 (Antarctic Sun Starfish)
• Global Biotic Interactions: Barrukia cristata (Willey 1902)

eat

• Global Biotic Interactions: Eucampia antarctica
• Global Biotic Interactions: Thalassiosira frenguelliopsis
• Global Biotic Interactions: Fragilariopsis obliquecostata (van Heurck) Heiden 1928
• Global Biotic Interactions: Chaetoceros pelagicus Cleve
• Global Biotic Interactions: Fragilariopsis kerguelensis

prey on

• Global Biotic Interactions: Gnathiphimedia mandibularis K. H. Barnard 1930
• Global Biotic Interactions: Djerboa furcipes Chevreux 1906
• Global Biotic Interactions: Anoxycalyx (Scolymastra) joubini (Topsent 1916) (Giant volcano sponge)
• Global Biotic Interactions: Uristes murrayi (Walker 1903)
• Global Biotic Interactions: Echiniphimedia hodgsoni (Walker 1906)