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Dozens at this location.
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Dozens at this location.
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Dozens at this location.
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Dozens at this location.
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Aplysiopsis enteromorphae graze happily on the filamentous green algae in the largest tidepool below the Visitor Center at Cape Perpetua. They are tiny blackish, grey, dark olive green. Watch your step as they are on average less than a centimeter and hang out on the very shallow shelf of the pool which is easily accessible by large feet.
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25mm in length. Found grazing on rock near the surface.
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25mm in length. Found grazing on rock near the surface.
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25mm in length. Found grazing on rock near the surface.
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Yay, another fouling slug. Found on the edge of a shell, not on its food. Since Marissa was asking about how to tell this from a nudibranch and I gave a half-assed answer, my book-reading tells me the key is the rolled rhinophores. Nudibranchs have wildly diverse rhinophores, but they're rarely (never?) simple rolls like this. Saccoglossans like this one also lack oral tentacles, which are present on many (but not all) nudibranchs, particularly the similar-looking aeolids.
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Yay, another fouling slug. Found on the edge of a shell, not on its food. Since Marissa was asking about how to tell this from a nudibranch and I gave a half-assed answer, my book-reading tells me the key is the rolled rhinophores. Nudibranchs have wildly diverse rhinophores, but they're rarely (never?) simple rolls like this. Saccoglossans like this one also lack oral tentacles, which are present on many (but not all) nudibranchs, particularly the similar-looking aeolids.