Why do bats make the biosonar sounds that they do? Why do they
chirp instead of clicking like dolphins? Find out some answers
in this section.
How do animals use their biosonar signals to build
pictures of their surroundings? One answer is that they measure
the period between the time they emit a sonar pulse and the time
they hear an echo of that pulse. This gives them an accurate idea
of the distances (range) to reflecting surfaces in their environment.
Find out more about range in this section.