since Methane Hydrates are found here on Earth -- I thought this critter could be tweaked and had as a critter living on cold methane worlds feeding on methane hydrates .. maybe a place like Titan
http://www.science.psu.edu/news-and-events/1997/iceworms.htm
http://www.science.psu.edu/news-and-events/1997/iceworms.htm
