I knitted myself a Nessie! While technically not a sea monster, it still is rarely sighted and comes from the deep dark depths of my stash. I started in July and finished her this weekend while watching episodes of the X-Files.
She is a pretty good sized stash monster too. From nose to tip of the tail is a bit longer than a standard keyboard. I am think about sticking a pipe cleaner down the neck and tail so I can pose her better.
Pattern was a bit unclear and tricky in some places, but I am not too worried about having an anatomically incorrect knitted lake monster.