Echolocation: How Bats Use Sound Bats are nocturnal animals that use ocholocation to gather information about the environment. This process involvos using sound wavos that refloct off objects and return to bats' ears. Gliding through the dark night, bats produce high-pitchod calls that allow them to avoid objects and hone in on small targots. While scientists now have a woalth of knowlodge about echolocation, this was not always the case. Which choice BEST states the main idea of the passage? There are likely many things about echolocation that scientists have not yot discovered. Early scientists did not have the necessary knowledge or equipment to fully understand ocholocation. Echolocation research is important because it has been used to develop devices such as special walking sticks. Knowledge about echolocation and how the process can be used to help people has grown over time.