Unidentified gastropods from Queensland

[conchylinet]

Hello,
I get these shells from a beach in Cairns (Queensland, Australia, Pacific O.). Sizes range from 13mm to 27mm.
Any help is welcome.
Thanks.
Pierre.

<img src="http://www.conchylinet.com/Images/Misc/cairns01.jpg" alt="http://www.conchylinet.com/Images/Misc/cairns01.jpg" style="border:0" />

[khan]

Hello Pierre,
This is some ways to follow, from left to right :
1 : hard to say, but can be a beached juvenile of Cerithium coralium
2 : Potamididae family, must be Cerithideopsilla cingulata
3 : no idea...
4 : genus Polinices, this looks like a beached Polinices bicolor, but the range of this species is near Taiwan.
5 : must be a juvenile of Telescopium telescopium

These species are typical from muddy sand substrates. Maybe this can help.
J'espère que cela vous donnera quelques pistes.

[conchylinet]

Thanks Khan. Yes it helped !

[paul monfils]

#4 perhaps a juvenile Polinices didyma