micro brittlestar

I have a tank that is filled with micro brittle stars in the sandbed and I am thinking of taking some to introduce to my other tank so that they can populate the sand bed there. Is there a method to trap as many as possible so its easier to transport them to the other tank instead of sucking...

Hi all, hoping for an ID on this or these things. Hiding in my rock. I had a look through the sticky and nothing except maybe hydroids came to mind. You see it move something out of its hold and it seems to be popping out of multiple points in the rock. These were taken during the middle of the...