First one is a feather duster. This is a filter feeding tubeworm and is good to have.
The second one looks like a sponge to me...hard to tell for sure though. I'm not sure about the third. It looks like a small anemone of some sort...majano perhaps? Do a google search or search this site for pics of majano and aiptasia anemones and see if either looks like what you have.
Life is not measured by the number of breaths we take, but by the moments that take our breath away.