Hi, sometimes I receive a cluster of small rounded granules (less then quarter mm each)together with the shells.Granules are black coloured and have unpleasant smell.In most cases I found them in the aperture of cold water buccinids.I suspect it's some kind of mould. Is it possible that this mould (?) would spread and cause some damage to other shells? Milan ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com