I think Frank Herbert would have a much better case, considering how much Avatar rips off Dune. But in any event, my character was meant to be robotic, not organic.
It's funny though I knew of a writer who read about the Navy's work with oxygenated liquid scuba tanks and wrote in into a story. He lost count of the people that thought he got the idea from the Abyss, even though he wrote it before the movie came out.