Antenna
Antenna explained in an easy to understand way:
Imagine trying to find your way in a pitch-black room without bumping into anything. Just like you would extend your arms to feel for obstacles, a crustacean or insect uses its antennae to navigate its environment and gather information. These antennae act as sensitive "feelers," much like your outstretched hands, helping the creature detect changes and avoid dangers in its surroundings.
Practice Version
Antenna: A feeler on the head of a crustacean or insect. An antenna is a sensory organ used by animals to detect changes in their environment.