Who Gives A Fish Forums

I don't think you've got anything to worry about, honestly. It took mine a couple of weeks to fully acclimate and open up all the way. What you want to do is try to find a spot where it's gently swaying, you know, just waving a bit, and not being tossed around like crazy.

That one's a branching hammer.

I think it's pretty straightforward. One type of hammer coral grows upwards, branching out like the limbs of a tree. The other type grows horizontally, forming a wall-like structure.