Afanc

"An afanc, sometimes called addanc, is a giant toothed worm that lives in a lake. (Afanc is pronounced ah- vahnk. Addanc: ah-thahnk, with “th” voiced, as in “this”) A fully grown one is 20 yards long and two yards in
diameter, and of very frightening appearance. It does not appear to have any eyes, but it sees quite well. It rears out of the water quite suddenly, and can attack in the same turn that it surfaces.
It always attacks anyone who approaches its lake. It will rear up so that the first 4 yards of the monster are
all in the same two-hex radius. From this position, it can lash out up to 2 hexes in any direction from its front. The teeth are very sharp. There are lots of them, and the wounds they make are large.
Afancs are solitary creatures and may be active at any time.
==References==
*Classic: Fantasy Bestiary
*GURPS Fantasy Bestiary Update (2018 January 05)