Onykia robusta (Verrill 1876)

are eaten by

• Global Biotic Interactions: Physeter macrocephalus Linnaeus 1758 (Cachelot)
• Global Biotic Interactions: Somniosus pacificus Bigelow & Schroeder 1944 (Pacific Sleeper Shark)

are preyed upon by

• Global Biotic Interactions: Callorhinus ursinus (Linnaeus 1758) (Northern Fur Seal)
• Global Biotic Interactions: Somniosus pacificus Bigelow & Schroeder 1944 (Pacific Sleeper Shark)

eat

• Global Biotic Interactions: Brisaster townsendi (A. Agassiz 1898)
• Global Biotic Interactions: Velella velella (Linnaeus 1758) (Jack sail-by-the-wind)