Clicks are sharp, short sounds produced by quickly releasing air or creating a sudden change in pressure. They can be made using the tongue, lips, or other parts of the mouth. In many languages, such as those spoken by the Khoisan people of southern Africa, clicks serve as consonants and are integral to communication. In addition to human speech, clicks are also found in the animal kingdom. For example, dolphins and whales use clicks for echolocation, helping them navigate and hunt in the ocean. These sounds can vary in frequency and duration, allowing for a range of meanings and functions.