Rhyl

The rhyl is a worm-like creature. Children from Ba'ku, such as Artim, keep them as pets. (Star Trek: Insurrection)

It is unknown if this "palm pet" is native to the planet, or if the Ba'ku brought them from their homeworld. The script of Insurrection described the animal as "a colorful cross between a caterpillar and a jellyfish".

Its name comes from design notes, and was not mentioned in the movie. A licensed tie-in beanie toy of the Ba'ku rhyl was made by The Idea Company and sold, for a short time, at the Star Trek Experience, at the Las Vegas Hilton.