Tagelus californianus (Conrad 1837)

are eaten by

• Global Biotic Interactions: Octopus bimaculatus Verrill 1883 (California two-spot octopus)

are parasitized by

• Global Biotic Interactions: Parorchis acanthus (Nicoll)
• Global Biotic Interactions: Parorchis acanthus (Nicoll)
• Global Biotic Interactions: Acanthoparyphium spinulosum
• Global Biotic Interactions: Acanthoparyphium spinulosum

are preyed upon by

• Global Biotic Interactions: Larus philadelphia
• Global Biotic Interactions: Larus philadelphia
• Global Biotic Interactions: Rexithaerus secta (Conrad 1837)
• Global Biotic Interactions: Rexithaerus secta (Conrad 1837)
• Global Biotic Interactions: Catoptrophorus semipalmatus

eat

• Global Biotic Interactions: Renicola buchanani (Martin & Gregory 1951)
• Global Biotic Interactions: Renicola cerithidicola Martin 1971
• Global Biotic Interactions: Mesostephanus appendiculatus
• Global Biotic Interactions: Himasthla rhigedana Dietz 1909
• Global Biotic Interactions: Pygidiopsoides spindalis Martin 1951

prey on

• Global Biotic Interactions: Nuttallia nuttallii (Conrad 1837) (California mahogany-clam)
• Global Biotic Interactions: Tagelus subteres (Conrad 1837)
• Global Biotic Interactions: Renicola buchanani (Martin & Gregory 1951)
• Global Biotic Interactions: Polydora nuchalis Woodwick 1953 (Polychaete)
• Global Biotic Interactions: Macoma nasuta (Conrad 1837)