When did touch evolve?

Touch, as a sensory capability, evolved early in the history of multicellular organisms. The development of touch receptors likely began with simple organisms and gradually became more complex in vertebrates, providing essential feedback for survival, such as detecting predators or finding food. In humans, the sense of touch is highly developed, with specialized receptors that allow for fine distinctions in texture, temperature, and pressure, contributing to our interaction with the environment. This evolutionary process occurred over millions of years, adapting to the needs of different species.