I LOVED the way you explained the creature in full detail. Most people would just explain it in a line or two but you dedicated well over half the poem to the explanation, and it worked in your favor. ;] One thing I noticed, though...

"A tale so long, ten metres or so,"

^^ 'tale' should be 'tail'. The way you have it now is like saying "My Grandpa told me a fishing tale once, twas about the first fish he caught." lmao, horrible example, but hey, just thinking off the top of my head here, Lol. Anyways, other than that - flawless.

5.5
<3

I feel like I have seen the creature by the way you describe him, your imagery is vivid, the word choice was excellent, This peice is really quite chilling, I enjoyed this as my first read of the day, well written, poem you have here. perfect flow, I couldn't think of anyway to improve this that hasn't already been pointed out. 5/5

I love this...you had me hooked right from the first line and from there on it just kept getting better and better.
I found this original and unique in concept, a refreshing read.
Flow was flawless throughout the enitre piece and I loved the ending, I thought it was very intense.