Help me identify these two things in my tank please

[vietcu]

I have these two odd looking things in my tank and would like some kind of identification for them.
This one is a snail but doen't seem to have a shell. The shell on it is somewhat like a half of a clam.

This one looks like a stalk of a mushroom, or toadstool leather. I just noticed it growing under my rock today. It moves quite a bit with good control of movement. Can't get a real close up for some reason, pictures keep coming out blurry. This is the best I could do.

 

[itZme]

#1 is a stomatella snail. They are good for your tank.

#2 looks like a feather duster to me ... does it have an opening in the end or is it solid? I also have some snake polyps that look similar to that. Does it move around in location or stay in one spot? Does it change shapes?

 

[vietcu]

The base stays in one spot ( at least for the past few hours), does not have feather at the end of it. I have quite a few feather dusters in my tank(small, not the size you buy at the LFS). This one is about a little more than 1/4 inch in diameter, so its pretty big. Every once in a while it would bend and move, when it lengthen it would shrink in size then come back to what it would look like in the picture. I will keep an eye on it to see if it changes at all.

 

[bigdaddyadam]

the bottom picture appears to me very similar to a creature I had in my tank for several years, except mine was alternating white and black stripes. the thing I had was like a "rock worm". the base stayed in one spot but it would extend out like a long worm to grab small bits of food, then retract back into itselflike a slinky. the one I had was pretty cool and never hurt anything

 

[tetra-tag]

Your second one could be a Sipunculid, otherwise known as a Peanut Worm. They don't have feathers like a fan worm, but instead have a tentacle-bearing retractible snout that they can extend to pick up food. They are good to have in your tank, another benficial detritivore.

 

[vietcu]

Thanks for the info.

 

[JamesBryan]

I've witnessed one of those black and white striped worms bigdaddyadam described, grab a tiny blue leg hermit and couldn't pull into it's hole. Just held onto him for a few days. Then dropped the empty shell. Still a cool looking critter, but seems to be indescriminate feeder.