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Mexican Dancer Nudibranch 
(Elysia diomedea,)  and iridescent Orange Cup Coral, probably (Tubastraea 
coccinea.)  | 
			
			
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  *  The shallow east walls of Isla San Pedro 
Nolasco are especially rich in both vertebrate and invertebrate life.  The 
above image is an example.  Most conspicuous is the Mexican 
Dancer Nudibranch (Tridachiella diomedea,) or as it now is known, 
(Elysia diomedea,) is seasonably abundant in 
various sites in the Sea of Cortez.  To the right is the Orange Cup 
Coral, sometimes called the Sun Coral or Orange Tube Coral.  In the 
foreground are white and purple Coralline Algae. 
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