Norrisia norrisi (G. B. Sowerby II 1838)

are eaten by

• Global Biotic Interactions: Octopus bimaculatus Verrill 1883 (California two-spot octopus)
• Global Biotic Interactions: Orthasterias koehleri
• Global Biotic Interactions: Octopus bimaculoides Pickford & McConnaughey 1949 (California two-spot octopus)
• Global Biotic Interactions: Oxyjulis californica (Günther 1861) (Señorita)
• Global Biotic Interactions: Sebastes chrysomelas (Jordan & Gilbert 1881) (Black-and-yellow rockfish)

are preyed upon by

• Global Biotic Interactions: Octopus bimaculatus Verrill 1883 (California two-spot octopus)
• Global Biotic Interactions: Orthasterias koehleri
• Global Biotic Interactions: Octopus bimaculoides Pickford & McConnaughey 1949 (California two-spot octopus)
• Global Biotic Interactions: Sebastes carnatus (Jordan & Gilbert 1880) (Gopher rockfish)
• Global Biotic Interactions: Sebastes atrovirens (Jordan & Gilbert 1880) (Kelp rockfish)

eat

• Global Biotic Interactions: Egregia menziesii
• Global Biotic Interactions: Ecklonia arborea
• Global Biotic Interactions: Egregia menziesii
• Global Biotic Interactions: Macrocystis pyrifera (Giant kelp)
• Global Biotic Interactions: Cystoseira osmundacea

prey on

• Global Biotic Interactions: Gigartina corymbifera
• Global Biotic Interactions: Ecklonia arborea
• Global Biotic Interactions: Cystoseira osmundacea
• Global Biotic Interactions: Egregia menziesii
• Global Biotic Interactions: Codium fragile