Giant dry-worm
From Memory Alpha, the free Star Trek reference
The giant dry-worm was a creature native to the planet Antos IV capable of generating and controlling energy without causing harm to itself.
In 2267, Pavel Chekov drew an analogy comparing the abilities of the creature identified as the Greek god Apollo of Pollux IV to both the giant dry-worm, and Earth's electric eel. (TOS: "Who Mourns for Adonais?")
