Littorina littorea juvenile, height 6.2mm, from inside empty cavity of dead barnacle. Strong spiral rib on whorls. Thin crenulated aperture lip. Bright white columella distinguishes from other small Littorina spp. in barnacles. Menai Strait, March 2011.

Submitted by Ian Smith on Fri, 16/09/2011 22:13
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I.F. Smith
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