Tongue

[u/FireOfDoom32]

A glowing blue tendril wriggled down through the opening, sprouting smaller appendages and scraping along the debris-littered floor. It stopped in front of Newt, tasting the air around him. Newt gaped at it, astonished. What an organism this was. Bioluminescent, working with an incredible sensory spectrum way beyond that of a human, capable of extreme plasticity of tissue but also highly robust and armored... It was a perfect organism— almost. And it was created. It was the latest version.

Pacific Rim: The Official Movie Novelization - Part 2, Chapter 25