Actually, it's because most corals have a symbiotic relationship with a unicellular algae, and this is where they get most of there nutrients. So when there is no light, the coral must find its food somewhere else, so it hunts for planton with the tentacles. http://en.wikipedia.org/wiki/Coral
Like third paragraph down, it tells u everything.
Dunno if you guys remember me mentioning a rescue job... well anyway, this one was a throwaway, and I didn't think it would make it. I don't know what type it is, however, it has been doing well. We have had it for two months. Last night we got home about 1am, and I always like to do a bit of a peek, and I couldn't resist taking this after shot.
Before - when we rescued it...
After 2 months. This is a 30.37 second exposure, so yes it was dark.
This one is with my focusing spot light on.
If anyone can id that would be great (I have never been very good with the proper names)
Hard to believe this is the same coral as the one above... you can see a full pic on the "no water change" thread, but I thought these close ups would be nice to add.
