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

Robot crab experiments show that male fiddler crabs wave their claws longer and avoid retreating when rivals display, especially if the rival’s claw is small. This suggests flexible, context-dependent strategies in sexual signaling and competition. Read the full story at 🔗 https://sci.sx/673515781 In this video: Robot waving examples. Credit: Joe Wilde 📸 Follow us on Instagram for more exciting content https://www.instagram.com/sciencex.physorg/ #animalbehavior, #robotics, #evolution | Phys.or