coral id

Hi guys, I want to get your opinion on what I was told was a Hammer a few months ago at my Lfs. I have since noticed the ends of the polyps are not singular. Instead, many of the polyps have more than 1 polyp branching the main. What do you think?

We've had this in one of our farm tanks for over a year and it's about 9-10" across. Beautiful piece. Any guesses on what it is...it shouldn't be too difficult to figure out.

Can anyone ID this coral?... - is it a coral?... It is on a rock with yellow polyps and has a tubular shape with an opening in the end... It doesn't appear to change shape or position at all... Thx...

So, I foolishly bought these corals on impulse and it would help a lot if someone could id some of these for me. Thanks, Nico Ellis