I posted this question on one of my other threads but I figure more people will see it here. I got a frogspawn coral today and there are two white "flaps" on the coral. Every couple minutes a clear thing pops out and quickly retracts. I have done a decent amount of searching around and can't figure out what this thing is. I'm not really worried about it but would still like to know what it is haha.You can see it about 5 seconds into this video. https://plus.google.com/107785918218159972565/posts/bfGPuF2S3Kx