Afaik, the locations marked on the map are correct as of 4/14/2017. From the far east to far west of Sausan, I went to each one and all were present. Most however do not show up on the minimap so you have to keep your eyes peeled for rocks with triple hunches.
I had really issues finding them since I had no idea how they looked like. Thank you very much for this helpful picture! I would like to add, they are huge (compared to other similar crabs). Picture of size (compared to my archer) is linked here: https://imgur.com/AUSvKKY
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Anonymous 20-05-2016 17:35
The location is partially incorrect. You'll find one (ONE) ontop of the hill near the peak, towards the helms
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Anonymous 24-05-2016 03:12
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Anonymous 5-06-2016 14:04
That's only 3 must be more of them somewhere... Surely i saw one in the middle of a road south of Kusha among cheetahs.