Identification of some Kenya Shells

[shell collector de]

Hello shell collector
In the picture below you can see some shells which I found at one of Kenya’s beaches. Could you help me identifying them?

<a href="http://www.putfile.com/pic.php?img=5918268" target="_blank"><img src="http://img2.putfile.com/thumb/7/18807523494.jpg" alt="http://img2.putfile.com/thumb/7/18807523494.jpg" style="border:0" /></a>

Thank you for your help.  <span class="petit">--Last edited by shell collector de on 2007-07-08 13:53:55 --</span>