Beth Mortimer
Appearances
Short Wave
Good Vibrations: How Fiddler Crabs Mate
And they do a very adorable kind of waving behavior. So the male will sit for hours on the sand, waving his claw up and down. But we know from previous work on fiddler crabs that they can court even in the dark. So we know that the visual component wasn't everything with their courtship, that there was a component moving through the ground.
Short Wave
Good Vibrations: How Fiddler Crabs Mate
So they're escalating the amount of seismic information that they're generating as they go through their courtship routine.