The Scuba Tank
- PADI center located in Valparaiso, with information on instruction and travel, hours of operation and contact details.
- http://www.scubatank.com/

Seaweed Diver
- A PADI shop describing class schedules, trips, rental prices, and services.
- http://seaweeddiver.com/

Scuba Quest
- Fishers dive center with details on PADI instruction and a calendar of classes and trips.
- http://www.scubaquest.com/

Hart City Scuba
- Elkhart center with instruction, travel and hours of operation.
- http://www.hartcityscuba.com/

Diver's Supply Indy West
- Included are hours of operation, contact information, map and driving directions, along with local dive site locations, online guestbook, photo gallery, and PADI, NAUI, TDI instruction.
- http://www.dsiwdeep.com

Caribbean Divers
- Fort Wayne based center with information on training classes, an online buddy forum, links to local dive sites, and vacation travel opportunities.
- http://www.caribbeandivers.net

N'Pursuit Adventure Charters
- Provides charter service to shipwrecks in Indiana and Chicago area, along with fishing excursions. Find information on location, driving directions, contact details, FAQs on diving and fishing trips, and trip planning tips and links.
- http://www.npursuitcharters.com

Southern Indiana Scuba
- Full service 5 Star PADI dive center offering PADI training, sales, service and travel. Nitrox training as well as Nitrox fills. DOT approved hydro station in house.
- http://www.southernindianascuba.com