Where is a caecilian’s sensory tentacle located?

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Zoom in on the serpentine locomotion of the limbless, amphibious caecilian over soil — Gymnophiona Caecilian moving over soil.

A caecilian’s sensory tentacle is located on each side of its head. These specialized organs are essential for the animal's survival, as they greatly enhance chemosensory perception, allowing terrestrial caecilians to locate their prey—such as earthworms—while living in subterranean environments where vision is of little use.12