A tentacle is one elongated flexible organ present in animals, especially invertebrates. Usually, tentacles are used for feeding, feeling and grasping.
A real-life octopus has eight tentacles. Oftentimes, in art, plants have tentacles as well, in the form of movable vines. And, naturally, other animals and monsters are depicted with tentacles.
Criteria for tagging
All images with tentacles should be tagged here, regardless of whether the tentacled creature is visible.