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Project Noah Nature School
Grapsus grapsus
These seem to be a darker color phase than the males I spotted previously: http://www.projectnoah.org/spottings/745... CDF of the Galapagos: Are these females or juveniles?
Spotted on Oct 22, 2013
Submitted on Nov 16, 2013
5 Comments
Cool
Yes, these guys are fascinating. I worked on them half a century ago. For some info look at http://www.darwinfoundation.org/datazone...
or http://www.ncbi.nlm.nih.gov/pubmed/55977.... My basic paper is long - and in German, though.
beauty ! nice shot dear
Thank you for the info! These crabs were really neat to observe and photograph. One of my favorite animals from my Galapagos trip!
I would guess this is a female, because I don't see bristles on the front walking legs and ther claws are relatively small. But it also could be a half grown male. The only way to be sure, as with all crabs, would be to look at the abdomen, which is narrow in males and wide in females.