82K views · 324 reactions | Researchers tested fiddler crab mating strategies by introducing a robot with a waving claw, dubbed "Wavy Dave." CNN spoke to one of the scientists about the study and some surprising moments caught on camera. | CNN | Facebook

The Fiddler Crab’s Famous Claw 🦀✨ The male fiddler crab is easy to recognize — one of its claws is enormous compared to the other. This oversized claw isn’t just for looks. It serves two vital purposes: defending territory from rival males and impressing potential mates. When the male waves his giant claw in rhythmic motions, he’s not only showing off — he’s performing one of nature’s most charming courtship displays. Even more fascinating, if a male loses his massive claw in a fight, he can gr