title for learn-about section on whelks & relatives in A SNAIL'S ODYSSEY
  black dot
 

       <td colspan="3"><p><strong><img src="../../IMAGES/WHELK/MorphsNucLam6.jpg" alt="photograph of morphs of whelks Nucella lamellosa from Freeman's Island, San Juan Island, Washington taken by Trevor Kinkaid, Department of Zoology, University of Washington, Seattle5.  Freeman’s Island  This morph of the whelk Nucella lamellosa is typical of an extensive series found throughout the San Juan Islands, nearby mainland, and parts of Puget Sound, in which coloration is highly variable and creates patterns independent of morphological features.  Colours vary from white to uniform brown.  Between these extremes are a graded series of banded forms, in some cases forming clines (illustrated by the 3 individuals in the lower part of the photo).

 

 

 

 

 

 


1X

 
  RETURN TO SHELL MORPHOLOGY & HABITAT