What advantages does an animal have with bilateral symmetry have over an animal with radial symmetry?

Animals with radial symmetry are typically sessile, free floating, or swim weakly. They have no anterior or posterior end and thus can engage their environment from all sides. Their arrangements allow them to catch prey coming from any direction. Bilatera symmetry is found in animals which are better fitted for forward or directional movement. This is associated with cephalization where sense organs/nerves ect ... are concentrated in an anterior region. Moving through an environment head first is the most efficient means to sense and respond to the surroundings.