Sanibel Seashell Industries -
 Information and online catalog of seashells and other marine organisms, as well as arts and crafts.
http://www.seashells.com/

Schooner Specimen Shells -
 Includes items for sale, trading information, and want lists. Also contains collecting information and links.
http://www.schnr-specimen-shells.com/

Sea Shell World -
 Retailer of seashells, coastal and nautical decorative items. Site includes several speciality shops for different types of shells and shell crafts and scientific information for some species.
http://www.seashellworld.com/

Seashells and Sea Items -
 Offering an assortment of seashells.
http://www.angelfire.com/

The Shell Connection -
Supplier of specimen sea and land shells. Site contains wish list and mailing list functions.
http://www.shell-connection.com/

Shell Lovers, Inc. -
 Supplies for shell collectors.
http://users.rcn.com/

The Shell Man Inc. -
A large selection of specimens from the ocean and beach. Includes some decor items.
http://www.theshellman.com

Shell Shop -
 Specialists in marine sea shells. Exhibits large selection of specimens including giant clams, corals, sea shell jewelry.
http://www.morrobay.com/