53 Tonicella marmorea

53 Tonicella marmorea

Length 32 mm. LWS. Isle of Lewis, Scotland. April 2018. Leg. D.W. McKay & S. Taylor.
When displaced from the substrate, T. marmorea can use the strong, lateral longitudinal muscle (see 38 Tonicella marmorea & 50 Tonicella marmorea ) to roll into a protective ball.

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