research on how animal make use of sonar to communication with each other
Answers
Sonar, or bio-sonar, is a method of echolocation used in air or water, by animals such as whales or bats. Sonar may also refer to the man-made technology that uses instruments to emit sound and detect the returning echo.
Animals such as bats use echolocation as a form of sonar to find food at night, but they might also use it to communicate.
Researchers found that roosting males seem to detect the echolocation calls of an approaching bat from at least five metres away. In response to an incoming male, the bats emitted aggressive vocalizations suggestive of territorial defence. If the approaching bat was female, however, the males responded with courtship songs.
The males must be using echolocation, the authors conclude, because in low-light conditions at a distance of at least five metres, neither visual nor odour cues could provide the roosting bats with information about the sex of their visitor
Dolphins, highly intelligent and active mammals, utilize sonar to their advantage when navigating through the ocean. Sonar is also referred to as echolocation, and it provides dolphins with an advantage of hearing and detecting things with precision. Apart from detecting objects in the water, dolphins also depend on sonar to communicate with one another, including their young. Sonar not only helps dolphins to hear, but it gives them a clearer picture of objects underwater.
Outgoing and highly bonded to their family members, dolphins communicate with one another throughout their days. Sonar is important in allowing dolphins to send out clicks, trills and whistles to one another. When a dolphin is in his infancy, his mother may send him the same whistle over and over again to leave an "imprint." The unique whistle she sends for him is helpful to get his attention and keep her baby close by.