I was idly peering at a Ricordia frag yesterday, and was panicked by what appeared to be a large worm at the base. 

 I removed the frag with the intent of killing the worm. 

   Closer inspection revealed that it was not a worm after all.  What I saw seems to be the method of locomotion, and perhaps a meams of multiplying.  The worm like thing was what can best be described as a Pseudopod.  The ricordia was in the process of moving from the small rock it had occupied to a larger rock. 
