1. look at my flowerpot, same charectericstics and it grew the same way eventually
2.thats not a mat it looks like the exoskeleton where they are retracting in and out
3.i guess it might but all the charecteristics point to flowerpot.
not an argument i just firmly beleive it a gonopora, hopefully someone else will see what im saying if they have owned one like myself..once again the true test is when you got it was it totally in? when its in the dark at night does it totally go inside the skeleton if so its a gonipora, if its stay out and it looks like it rolls into little balls on the OUTSIDE of the rock then its zoos .. but i see no rock just a skeleton..youll also know when ity settles in if it gets long tentecles like mine then its obviously not a zoo,, but if they stay short for along time it could be a zoo