Pomona College, Clareniont, California 
91 
those inshore and often uneo\ered at low tide have hits of rock or 
shell fragments clinging to them, apparently for protection against 
crabs and possibly other enemies. These smaller inshore specimens 
are usually of a light-brown color. Larger individuals are found in 
the deeper tide pools, where they are always covered with water. 
These, as a rule, do not have stones attached to them. The common 
shore crabs often retreat under the outspread tentacles of these 
