Hi all can anyone help me to find out what these are. The first one is the biggy he's about 5 to 6 cm frome base to the end of the tenticals. It dont move and is allways open and allso there are a few small one's about, i need to know if its good or bad. Sorry about the pic. The next one is with the coral but does not seem to be doing any harm , its been there since i got the coral and there are more of them scatterd about. This one allso stays still. hope the pics help