title for learn-about section on whelks & relatives in A SNAIL'S ODYSSEY
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photograph of morphs of whelks Nucella lamellosa from Turn Reef, San Juan Islands, Washington taken by Trevor Kinkaid, Department of Zoology, University of Washington, Seattle12. Turn Reef, San Juan Islands  This reef of irregular metamorphic rocks is exposed only at the lower tide levels and thus provides good feeding conditions.  The author suggests that along with greater than average size comes increased amplitude of sculptural elements.  Colour banding patterns in these whelks Nucella lamellosa tend to be clinal.

 

 

 

 

 

 


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