Why the different impacts? One reason is that while they may be the same species, these plants haven’t evolved with fiddler ...

In the wild, fiddler crabs are scavengers that eat bits of organic matter they find in the sand and mud. In captivity, there ...

This story appears in the August 2016 issue of National Geographic magazine. All around her, guys wave seductively, beckoning her to their beach homes. How will the female fiddler crab pick a mate?