Fiddler crabs use vibrational signals in courtship, produced by drumming the ground with their claws or shells. Larger claws generate higher-energy signals, allowing females to assess male size ...

More information: Tom Mulder et al, Constraints on percussive seismic signals in a noisy environment by European fiddler crabs, Afruca tangeri, Journal of Experimental Biology (2025). DOI: 10.1242 ...