Shells with holes - ID both shell and animal that made them

[bellzeybubba]

Shell 5:
<img src="http://ellzey.org/wordpress/wp-content/uploads/2009/10/8bottom.jpg" alt="http://ellzey.org/wordpress/wp-content/uploads/2009/10/8bottom.jpg" style="border:0" />
<img src="http://ellzey.org/wordpress/wp-content/uploads/2009/10/8top.jpg" alt="http://ellzey.org/wordpress/wp-content/uploads/2009/10/8top.jpg" style="border:0" />
Shell 6:
<img src="http://ellzey.org/wordpress/wp-content/uploads/2009/10/9bottom.jpg" alt="http://ellzey.org/wordpress/wp-content/uploads/2009/10/9bottom.jpg" style="border:0" />
<img src="http://ellzey.org/wordpress/wp-content/uploads/2009/10/9top.jpg" alt="http://ellzey.org/wordpress/wp-content/uploads/2009/10/9top.jpg" style="border:0" />

Like I said, they're pretty beat up, but these are the ones the boy picked that he wanted to learn more about!