shell or a sand?

[diocrisseashells1000]

this i found after a typhoon rage in the visayan sea philippines. it looks like a dentallium specie.

[diocrisseashells1000]

if you cant see the photos. here are the links,maybe it will work.
<!-- m --><a class="postlink" href="http://www.flickr.com/photos/63645283@N06/sets/72157626870643292/">http://www.flickr.com/photos/63645283@N ... 870643292/</a><!-- m -->

[paul monfils]

The two on the left, made of sand grains, are not molluscan.  They are made by various species of marine worms (Phylum Annelida).  The others are all mollusks of the Class Scaphopoda, commonly called tusk shells.  Third from left is Dentalium aprinum.  Next is Dentalium elephantinum.  The last two I am not certain about, since there are many small white species of tusk shells.  Dentalium (Fustiaria) nipponica is one possibility.  If it is that species, it can be identified by a long narrow slit beginning at the apical (pointed) end, and extending about 1/4 of the way down the shell.

[diocrisseashells1000]

Thanks & hi Paul, now i know it is not also a mollusk, but, i still keep it, it is not easy to come by with this kind of unique species.
happy shelling.