Actually, these really look like a nice little kind of coral polyp that I got a whole bunch of on some florida ("gulf coast"?) live rock a couple of years ago... they seem to be quite prominent on some of these live rocks, and as far as I was concerned, they looked really nice, especially in great numbers, and they had this slight orange color...
Definitely NOT Aptasia, these things have white spots on the tentacles... aptasia don't... plus these DO NOT multiply like the weed that aptasia is... not to mention stinging everything else in sight!!