Geckos use the saccule — a part of their inner ear traditionally associated with maintaining balance and body positioning — to detect low-frequency vibrations, according to a duo of biologists at the University of Maryland; this special ‘sixth sense’ plays a complementary role to the geckos’ normal hearing and the way they sense the world around them. The tokay gecko (Gekko gecko). Image credit: Duncan Leitch. “The ear, as we know...
