I noticed a little hairy thing on the shell (see red arrow). First I thought it's a fungus, but then I saw it retreating into the shell. There's a small hole in the shell there, so the thing is attached to or part of the body. Any idea what could it be?
The tip of the shell is also all eroded, but I saw that on all of them, including in the pics on the net, so that could be normal.
The tip of the shell is also all eroded, but I saw that on all of them, including in the pics on the net, so that could be normal.
