sense vibration.
antennae
they use their antennae
It helps the insect to sense and smell.
One plural of antenna is antennae, usually referring to the sense organs or 'feelers" of insects.
No, they don't have an antennae.
Butterflies use their antennae for smelling things.
The antennae are sensitive organs that sense smell and vibration.
They use their sense of direction/feeling through their antennae and their eyes pick up light.
Not in the same sense as, say, mammals, but their antennae are very sensitive to scents.
They're practically blind, but use their antennae to sense.
It acts like sense and taste organ for the lobster.