Which organisms have bilateral and radial symmetry?

Bilateral symmetry is found in organisms where the body can be divided into two identical halves along only one plane. Examples include humans, butterflies, earthworms, and most vertebrates. Radial symmetry occurs in organisms whose body parts are arranged around a central axis, allowing division into similar halves through multiple planes. Common examples are jellyfish (Aurelia), sea anemones, starfish, and hydra. These symmetry patterns reflect evolutionary adaptations—bilateral symmetry typically correlates with directional movement and cephalization (head formation), while radial symmetry suits sessile or floating lifestyles in aquatic environments.