Serpent worm
From Memory Alpha, the free Star Trek reference.
The serpent worm was a lifeform that served as the main ingredient of gagh, a Klingon delicacy. (TNG: "A Matter Of Honor", DS9: "Sons and Daughters")
In 2373, a serpent worm was delivered to Deep Space 9, where the tentacle of a creature grabbed Kira Nerys' hand. (DS9: "A Simple Investigation")
