Earthworms can reach 22 feet in length, nematodes can grow to 27 feet, tapeworms can reach 130, and some ribbon worms can stretch 180 feet. In my world, I want giant worms with hundreds of feet long to exist, similar to a few movies like Dune. That said, on a planet with earth-like conditions, is it possible for a worm-like creature to reach such incredible lengths? I'd prefer an answer that states which environmental pressures would prevent it from growing up to further lengths.

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    $\begingroup$ As you've already seen, there's nothing stopping worms from going to well over 100ft, the problem with giant worms isn't the length, it's the diameter. $\endgroup$ – Separatrix May 22 '20 at 12:38
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    $\begingroup$ Related question worldbuilding.stackexchange.com/questions/160805/… $\endgroup$ – user69935 May 22 '20 at 12:45
  • $\begingroup$ I would imagine that a Titan Boa would be above that max size due to supporting rib cage. $\endgroup$ – Michael Kutz May 22 '20 at 13:10
  • $\begingroup$ @AndrewBrēza thats the question I posted, pretty much the same question as OP's. $\endgroup$ – user69935 May 22 '20 at 14:49
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    $\begingroup$ @RandySavage I saw your comment and voted to close as a duplicate. That comment was automatic. I've never voted to close as dupe before so I didn't realize it would do that. $\endgroup$ – Andrew Brēza May 22 '20 at 15:05