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Purple sea star Pisaster ochraceus Shield-Backed kelp crab Pugettia producta Ringed nudibranch Diaulula sandiegensis

Keyhole Limpet Diadora aspera

Difference Between the
Female and Male Crab

 
Turn the crab over to see the its belly. If a 'lighthouse' is found on its underbelly it is a male; if it has a 'beehive' there it is a female.
 

Difference between Female and Male Crab
 
Text and drawing from: Bard, Shannon. (1990) "A Guide to Marine Exploration and Conservation." British Columbia : Western Canada Wilderness Committee.
 
 
Purple sea star Pisaster ochraceus Shield-Backed kelp crab Pugettia producta Ringed nudibranch Diaulula sandiegensis

Keyhole Limpet Diadora aspera
 
All images ©2004 Shannon Bard. Use of images is prohibited without permission.