could use a better picture, but they do look like zoa's. Unless you plan on cutting them there is not much to worry about. I have had all types of zoa's and have handled them with bare hands to place in the tank. Maybe just fortunate, but I think as long as you use some common sense there is little to fear.
when they grow they send out runners like on a plant and a new polyp grows out of it. this is how they grow so fast. so I am guessing they have a green base to them. good luck
You should start any new corals to your tank off in the sand bed and in a in an area of lower light and moderate flow. Put them there and leave them alone. If you keep moving them they will take longer to open.
Most all corals that I've gotten have opened within 10 minutes or so of adding them to my tank this way.
completely agree.
the less your hands are needlessly in the tank the better off everything is. 99% of my corals look vastly better a week after i introduce them and they've settled in. even turning a frag plug another direction is enough to cause the coral to protest by pulling it's polyps for a while.
Do you think that coral I posted is a paly?