Steromphala umbilicalis (da Costa 1778)

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• Global Biotic Interactions: Saccorhiza polyschides
• Global Biotic Interactions: Ascophyllum nodosum (knotted wrack)
• Global Biotic Interactions: Ceramium virgatum
• Global Biotic Interactions: Ellisolandia elongata
• Global Biotic Interactions: Saccorhiza polyschides
• Global Biotic Interactions: Fucus vesiculosus (Bladder Wrack)
• Global Biotic Interactions: Phymatolithon calcareum
• Global Biotic Interactions: Dictyopteris membranacea (Stackhouse) Batters
• Global Biotic Interactions: Saccharina latissima
• Global Biotic Interactions: Ulva intestinalis
• Global Biotic Interactions: Bifurcaria bifurcata
• Global Biotic Interactions: Corallina officinalis
• Global Biotic Interactions: Ectocarpus siliculosus
• Global Biotic Interactions: Ulva linza (Doubled Ribbon Weed)
• Global Biotic Interactions: Fucus serratus (toothed wrack)
• Global Biotic Interactions: Palmaria palmata (dulse)
• Global Biotic Interactions: Halurus equisetifolius
• Global Biotic Interactions: Ulva lactuca (Sea lettuce)
• Global Biotic Interactions: Lomentaria articulata
• Global Biotic Interactions: Sphacelaria cirrosa
• Global Biotic Interactions: Carpodesmia tamariscifolia
• Global Biotic Interactions: Gelidium spinosum
• Global Biotic Interactions: Gracilariopsis longissima
• Global Biotic Interactions: Leathesia marina
• Global Biotic Interactions: Dictyota dichotoma
• Global Biotic Interactions: Chondrus crispus (irish moss, carragheen)
• Global Biotic Interactions: Ceramium ciliatum
• Global Biotic Interactions: Jania rubens
• Global Biotic Interactions: Colpomenia peregrina (oyster thief)
• Global Biotic Interactions: Asparagopsis armata
• Global Biotic Interactions: Padina pavonica
• Global Biotic Interactions: Rhodymenia pseudopalmata
• Global Biotic Interactions: Furcellaria lumbricalis
• Global Biotic Interactions: Nemalion helminthoides
• Global Biotic Interactions: Mastocarpus stellatus
• Global Biotic Interactions: Osmundea pinnatifida
• Global Biotic Interactions: Rhodomela confervoides
• Global Biotic Interactions: Polysiphonia
• Global Biotic Interactions: Lithophyllum incrustans
• Global Biotic Interactions: Cladophora rupestris