Bees "hear" with their legs.

It makes sense that bees would "hear" the vibrations we call sound waves with their antennae, but "hearing" with their legs? A group, of sensors on the bee's tibia, called the subgenual organ, pick up the vibrations of air and of the substrate on which the bee is standing. Inside the dark hive, bees experience the waggle dance via those vibrations of air and comb through the subgenual organs and the Johnston's organs of the antennae.