Sterechinus antarcticus Koehler 1901

are preyed upon by

• Global Biotic Interactions: Labidiaster annulatus Sladen 1889 (Antarctic Sun Starfish)
• Global Biotic Interactions: Glyptonotus antarcticus Eights 1852 (Giant Antarctic isopod)
• Global Biotic Interactions: Macroptychaster accrescens (Koehler 1920)
• Global Biotic Interactions: Odontaster validus Koehler 1906 (Sea star)
• Global Biotic Interactions: Bathybiaster loripes Sladen 1889

eat

• Global Biotic Interactions: Fragilariopsis obliquecostata (van Heurck) Heiden 1928
• Global Biotic Interactions: Thalassiosira trifulta
• Global Biotic Interactions: Proboscia alata
• Global Biotic Interactions: Fragilaria nana
• Global Biotic Interactions: Chaetoceros concavicornis

prey on

• Global Biotic Interactions: Camptoplites tricornis
• Global Biotic Interactions: Kirkpatrickia variolosa (Kirkpatrick 1907)
• Global Biotic Interactions: Haliclona (Rhizoniera) dancoi (Topsent 1901)
• Global Biotic Interactions: Polymastia invaginata Kirkpatrick 1907
• Global Biotic Interactions: Tentorium papillatum (Kirkpatrick 1908)