Full service shop in Green Bay offers lessons, gear, rentals. Trips include tropical dives, shipwrecks and treasure hunts.

Dive center located in Hudson, information includes local dive sites and fun dives on Lake Superior shipwrecks.

Wausau's full service PADI 5 Star dive center offering equipment, dive instruction, travel, nitrox, and links to gear suppliers and manufacturers.

Based in Canberra. PADI centre providing courses and equipment sales. Has an associated dive club. Services the NSW south coast region.

Based in Geelong. Dive the Port Phillip Bay heads area, the wrecks, caves, Victoria, Australia and overseas. Has an active dive club.

Includes a list of Western Australia dive sites.

Training center for both recreational and technical diving. Sales and service of equipment as well as rebreathers.

Tour operator plus runs two live-aboards: Sea Queen and Sea Spirit. Includes information on the company, live-aboard, islands, and diving.

A guide to the marine life of the coastal South Carolina waters, featuring colorful photographs and descriptive information.

Information specifically about underwater housings for digital cameras.