Oradarea edentata K. H. Barnard 1932

are preyed upon by

• Global Biotic Interactions: Harmothoe spinosa Kinberg 1856
• Global Biotic Interactions: Labidiaster annulatus Sladen 1889 (Antarctic Sun Starfish)
• Global Biotic Interactions: Aethotaxis mitopteryx De Witt 1962 (Longfin icedevil)
• Global Biotic Interactions: Liljeborgia georgiana Schellenberg 1931
• Global Biotic Interactions: Trematomus nicolai (Boulenger 1902) (Spotted notothen)

eat

• Global Biotic Interactions: Fragilariopsis linearis
• Global Biotic Interactions: Thalassiosira expecta
• Global Biotic Interactions: Trichotoxon reinboldii
• Global Biotic Interactions: Chaetoceros flexuosum
• Global Biotic Interactions: Odontella weissflogii

prey on

• Global Biotic Interactions: Amphidinium hadai Balech 1976