This video, by Robert Hughan, is about two shore crabs fighting. If a crab loses limbs during such a fight, then it will grow them back on at its next moult.
Some shrimps are in the video as well.
New crab species discovered from Indonesia and Malaysia: here.
Wow, intersting fact! Did not know about that, thank you!
Probably, there will be more about crabs on this blog 🙂
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