Two questions

[paphater]

Need help identifying two things in the tank. This is a used setup I got off of craigslist.

Before I bought the tank the seller had a couple of anemones that she sold. I'm not sure if this is leftover from when she pulled them off the rock or something else that is funky.

Anything I need to worry about?

 

[KJ]

Polyp and sponge.

 

[cloak]

Those look like zoanthids or something similar in the first picture and those are harmless sponges in the second.

http://www.advancedaquarist.com/2003/2/inverts

 

[paphater]

Thanks everyone.