Chicago Aquanauts Scuba Association
- A not-for-profit Chicago area dive club offering PADI training and dive trips.
- http://www.casascuba.org/

Narked Sharks Scuba Diving Club
- Group of recreational, wreck, cave and technical divers located in the Naperville area, in the suburbs west of Chicago. Member contact list, calendar, meeting minutes, and photos.
- http://www.narkedsharks.org/

Buccaneers Dive Club
- Contains club membership information, including downloadable forms, photo galleries, guestbook, and calendar of events.
- http://home.comcast.net/~BuccaneersDiveClub/BuccHome.htm

REG-TECH Scuba Regulator Servicing
- Company specializing in regulator repair and service in the Chicago area. Includes regulator views, warranty information, pricing, and shipping.
- http://www.regtechscuba.com

Frogg Pond Dive Shop
- Highland Park PADI center with information on classes, trip opportunities, along with contact and location details.
- http://www.froggponddive.com/

Illinois Institute Diving
- Full service dive shop. Class schedule, travel information, specials, photos, location, and contact information. Located in Glen Ellyn, a western suburb of Chicago.
- http://www.iidscuba.com/

Nordic Diver
- Charter diving service offering shipwreck diving trips on Lake Michigan and Lake Superior. Dates, locations, photo album, contacts, and information request form.
- http://www.nordicdiver.com/

Below H2O Dive Center
- PADI 5 star dive center located in the western Chicago suburb of Aurora. Directions, hours, equipment, training, news, and events.
- http://www.belowh2o.com/

Scubaneers Dive Club
- Dive club based in Glen Ellyn, a Chicago suburb, which certifies divers at the B.R.Ryall YMCA. Information on class schedule and monthly meetings.
- http://home.xnet.com/~stuart/scubaneers/

Skyline Scuba Divers
- Dive club based in Skokie, a near North suburb of Chicago. Meeting calendar, membership information, notices, and newsletters.
- http://skyline.scuba-club.com/

Rachel Carson Scuba Corps
- Not-for-profit organization involved in ecological and other projects with government agencies and private organizations. Information on wrecks to dive in Lake Michigan, zebra mussels, and membership.
- http://www.serve.com/rcsc/

Shipwreck Adventures
- Charter company to explore Great Lakes shipwrecks. Products, charters available, technical diving, photo gallery, and contact information. Based in Rockford.
- http://www.shipwreckadventures.com/

Underseas Scuba Center
- Full service dive shop. Training, equipment sales and service, rentals, travel information, location, hours, and contacts. Located in Villa Park, a western suburb of Chicago.
- http://www.underseas.com/

Sentry Scuba
- Full service dive shop. Training schedules, newsletter, trips, and contact information. Located in Eastern Illinois in Moline.
- http://www.sentryscuba.com/

Sea Lions Dive Center
- Full service dive shop. Training, SCUBA equipment sales and repair, trips, maps, and contact information. Located in Hanover Park, a suburb of Chicago.
- http://www.sealions.org/

Sea Level Diving
- Full service dive shop. Training, SCUBA equipment and repair, trips, charters, rentals, and contact information. Located in Crystal Lake, a Northwest suburb of Chicago.
- http://www.sealeveldiving.com/

SCUBA Emporium
- Online catalog and ordering, vacations, classes, events, newsletter, and contact information. Two dive shop locations in the south Chicago suburbs of Alsip and Orland Park.
- http://www.scubaemporium.com/

Pearl Lake Resort
- Offers camping, SCUBA diving (85 foot maximum depth), swimming, restaurant, and RV sales and service. Located in South Beloit, on the Illinois-Wisconsin state line. Map, calendar, and contacts.
- http://www.pearllake.com/

Omni Scuba
- Full service dive shop. Training, equipment, newsletter, events, photos, and contact information. Located near the Brickyard Quarry dive area near St. Elmo in South-Central Illinois.
- http://www.omniscuba.com/

Midwest SCUBA Center
- Full service dive shop. Training schedules, SCUBA equipment sales and service, rentals, trips, and contact information. Located in Champaign, in East-Central Illinois.
- http://www.mscscuba.com/

Mermet Springs
- An 8.5 acre spring fed stone quarry devoted to diving and dive training, located in Southern Illinois and featuring 120 foot depth and a sunken Boeing 727. News, events, prices, rentals, directions, accommodations, photos, and contact information.
- http://www.mermetsprings.com/

Haigh Quarry
- Spring fed quarry dive site. Rentals, maps, photos, water temperature and visability, news, message board, and contact information. Located in Kankakee.
- http://www.haighquarry.com/

Do Dive In Scuba Center
- Full service dive shop. Diving and snorkeling instruction and equipment and service, travel, calendar, photo gallery, and contact information. Located in Peoria.
- http://www.dodivein.com/

Dive Chicago
- Lake Michigan dive charters, training, and contact information.
- http://www.divechicago.com/

D.D. Dive Shop
- SCUBA equipment sales and rentals, classes, trips, specials, and contact information. Located in the Chicago North Shore suburb of Glenview.
- http://www.dddive.com/

Chicagoland Scuba
- Full service dive shop. Training schedule, location, and contact information. Located in Lake Zurich, a Northwestern suburb of Chicago.
- http://www.chicagolandscuba.com/

Captain Dale's Dive Center
- Full service dive shop. Training schedule, dive charters, map, hours, and contact information. Located in the Chicago suburb of Wheeling.
- http://www.captaindales.com/

Midwest Diving Specialists
- A 5-Star PADI facility providing training, sales, travel and service of Dacor and Sherwood regulators and BCDs for SCUBA diving. Located in Normal.
- http://www.mds-scuba.com/

Underwater Safaris Dive Center
- Full service dive shop. Training, service, sales, photo gallery, local diving, newsletters, and contact information. Located in Chicago.
- http://www.uwsafaris.com/

Loves Park Scuba
- Full service dive shop serving Northern Illinois and Southern Wisconsin. Services, sales, classes, trips, location, and contact information.
- http://www.lovesparkscuba.com/

Berry Aqua Paradise
- Full service dive shop offering snorkeling and scuba diving equipment and instruction. Location, hours, and photo gallery. Located in Naperville, a far west suburb of Chicago.
- http://www.aquaparadise.com/

Forest City Scuba and Sports Center
- Full service dive shop offering scuba diving and snorkeling sales, service, classes, and rentals. Contact information and hours. Located in Rockford.
- http://www.forestcityscuba.com/