What's this?

[Briddo]

This is probably too easy, but was out twiddling with the new camera.

 

[dod]

one of those razor shells?

 

[Borats Baby]

Looks like a lump of glazed stone.

 

[Deleted member 3428]

I would agree with Dod, looks like a shell of some type.

 

[Briddo]

Aw too easy, It is a razor shell. * must try harder*

 

[Tim Sainsbury]

I was going to say the underside of your bath