What are these?

[Simon68]

Is this guy a whelk? Should he go?

 

[Simon68]

Here is a better pic maybe?

 

[Maxi]

I think that is a nass snail?

They are good guys. They stay under the sand until you drop food in the tank.

Wait for confirmation from someone else though, I am not completely sure. Only the last pic is clear.

 

[Maxi]

Go to number 87 on the TBS site pictures, and see if it is the same.

 

[bigtex52]

Florida Conch isn't it? He will eat your snails...

 

[Maxi]

That doesn't look like a conch to me.

 

[Simon68]

I think it's a Murex snail

 

[docklink]

Conch or Murex, they're both carnivorous. Pretty to look at but will damage other life in the tank.