What is the primary function of the lateral line in aquatic animals?

The lateral line in aquatic animals primarily serves the function of detecting movement in the water. This sensory system is composed of a series of mechanoreceptors known as neuromasts, which are sensitive to water displacement. By detecting vibrations and changes in water currents, the lateral line helps these animals sense the presence of nearby predators or prey, navigate through their environment, and maintain schooling behaviors.

The other options focus on functions that the lateral line does not directly address. Regulating body temperature is more relevant for physiological adaptations rather than sensory detection. Enabling communication is typically accomplished through different mechanisms, such as visual or chemical signals. Facilitating feeding strategies can be influenced by sensory input, but the lateral line’s primary role is centered on movement and environmental awareness rather than directly assisting in feeding techniques.