Live Rocks

Remember that we turned one of our aquariums into a salt tank a couple days ago? Since then we added a few pounds of live rock to make the tank interesting, give the fish somewhere to hide and help filter the water. For those of you who didn't know rocks could be alive, well you'd be amazed. They're actually rocks that tons of strange oceanic animals and plants have attached themselves to. The rocks aren't even visible anymore.

Our rocks have a bunch of stuff that I have no idea what it is, but Seth and I keep watching, hoping to see weird stuff grow or move or grab infinitesimal particles to eat. I know for sure we have some plants and a small tube worm and some anemones. We also have this really creepy brain thing (photo below) that I need to do some research on to find out what it is. And who knows how many other things live on these rocks that are still too small to see!