Kill The Worm!

"Have done with it, Lord Hevne," Darion, at her side, whispered. "Kill the worm."
Hevne raised her hand, silencing her warrior.
"How may we communicate with you?" she asked.
Again the fin changed colour, less brightly this time; more in shades of green and yellow.
Hevne sighed. It will not be easy to learn this alien language, she thought. And no sooner had she thought it than the worm began to emit strange noises from between the segments along its side. Slowly these noises took on a more unified sound.
Until, erratically, the noises took on the form of words.