listing them • Upper- Rough Periwinkle • Middle- rough periwinkles, smooth periwinkles, common periwinkles, crustaceans, hydroids, blue mussels, green sea urchins, dog whelks and purple starfish • Lower- common periwinkles, limpets, green sea urchins, ispods and amphipods, sponges, hydroids, tube worms, horse mussels, brittle starfish, tunicates, sea…
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