My daughter brought 3 hermit crabs home. What I know, I've had to learn FAST thru webpages. I've done what I can to provide them with an ultimate environment, but none of them seem to eat anything. The two smaller crabs were hanging out of thier shells looking horrible, and when I picked them up the little one fell completely out. Upon close inspection, they had little "wormlike" things crawling on thier bodies. These worm things are roughly a centimeter in length. I quickly pulled the dead crabs and shells out of the tank, and put them in a small isolation tank.... hoping that maybe they were molting (but with the worms I didn't think it was likely). 2 days later, the littlest one had just molted!! Sadly, the other really is dead. I have looked and looked trying to find out what these worm things are... does anyone know?