Toadstool Time Lapse

Here is a time lapse vide of my Toadstool Leather going to sleep for the night. The video was composed by taking a picture every 30 seconds over the course of two hours. This coral seems to anticipate the lights going out. It starts to pull in its polyps about an hour before the lights go out. It does the reverse in the morning and extends its polyps before the lights turn on.