Cancer gracilis

are eaten by

• Global Biotic Interactions: Enteroctopus dofleini (Wülker 1910) (Giant Pacific Octopus)
• Global Biotic Interactions: Platichthys stellatus (Pallas 1787) (Starry Flounder)
• Global Biotic Interactions: Pseudobatos productus (Ayres 1854) (Guitarfish)
• Global Biotic Interactions: Triakis semifasciata Girard 1855 (Leopard Shark)
• Global Biotic Interactions: Mustelus californicus Gill 1864 (Gray Smooth-hound)

are preyed upon by

• Global Biotic Interactions: Mustelus henlei (Gill 1863) (Brown Smoothhound)
• Global Biotic Interactions: Platichthys stellatus (Pallas 1787) (Starry Flounder)
• Global Biotic Interactions: Mustelus californicus Gill 1864 (Gray Smooth-hound)
• Global Biotic Interactions: Myliobatis californica Gill 1865 (Bat ray)
• Global Biotic Interactions: Sebastes caurinus Richardson 1844 (Copper rockfish)

eat

• Global Biotic Interactions: Aurelia labiata Chamisso & Eysenhardt 1821 (Pacific moon jelly)

prey on

• Global Biotic Interactions: Ruditapes philippinarum (A. Adams & Reeve 1850) (Japanese carpet shell)