Perumytilus purpuratus (Lamarck 1819)

are eaten by

• Global Biotic Interactions: Octopus mimus Gould 1852
• Global Biotic Interactions: Athyonidium chilensis (Semper 1868)
• Global Biotic Interactions: Acanthina monodon (Pallas 1774) (one-toothed thais)
• Global Biotic Interactions: Haematopus ater Vieillot 1825 (Blackish Oystercatcher)
• Global Biotic Interactions: Haematopus ater Vieillot 1825 (Blackish Oystercatcher)

are preyed upon by

• Global Biotic Interactions: Acanthocyclus hassleri
• Global Biotic Interactions: Eleginops maclovinus (Cuvier 1830) (Patagonian blennie)
• Global Biotic Interactions: Acanthocyclus gayi
• Global Biotic Interactions: Acanthopleura echinata (Barnes 1824)
• Global Biotic Interactions: Acanthina monodon (Pallas 1774) (one-toothed thais)