Assateague Seashells site. www.assateague.com/shells.html 

Legend of the Sand Dollar: http://www.seashells.org/legendsanddollar.htm

Mediterranean Sea Shells: http://www.medshells.com/

Seashells: http://www.seashells.org/ 

Seashell World: http://www.seashellworld.com/ 

The Beach - Gander Academy. http://www.stemnet.nf.ca/CITE/oceanbeach.htm 

The Humble Operculum: http://www.icshells.com/index1.html 

Whelks: http://www.ifmt.nf.ca/mi-net/fishdeve/whelks.htm