You're so lucky... most of the nemerteans I see are <1cm. I think there's a 1m Cerebratulus in a pickle jar somewhere...LeslieH:There are reliable reports of nemerteans up to 90 feet long and some books say they get up to 200 feet. The ones we usually see are much smaller. They're very common. the largest one I've seen was about 30 feet stretched out & 3 feet when contracted.
What does a 200 foot nemertean eat?