"Just been sent some links from someone who claims these are the concept works for the Eel/Worm and Proto Xeno.




Says above is the Fifield Worm.











Is the Holloway Worm.












Is what the Shaw Squidy will turn into.









Person says that the main threat in the movie is by the Engineers/Space Jockeys of which they kill most of the crew and there are four of them in the Movie."


Original Source is here