Homalaspis plana

are eaten by

• Global Biotic Interactions: Athyonidium chilensis (Semper 1868)
• Global Biotic Interactions: Lontra felina (Molina 1782) (Marine Otter)
• Global Biotic Interactions: Genypterus chilensis (Guichenot 1848) (Red cusk-eel)

are preyed upon by

• Global Biotic Interactions: Lontra felina (Molina 1782) (Marine Otter)

eat

• Global Biotic Interactions: Tegula atra (Lesson 1830)
• Global Biotic Interactions: Semimytilus algosus (Gould 1850)

prey on

• Global Biotic Interactions: Tonicia atrata (G. B. Sowerby II 1840)