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.

Full service dive shop. Training, SCUBA equipment and repair, trips, charters, rentals, and contact information. Located in Crystal Lake, a Northwest suburb of Chicago.

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.

Company specializing in regulator repair and service in the Chicago area. Includes regulator views, warranty information, pricing, and shipping.

Full service dive shop. Class schedule, travel information, specials, photos, location, and contact information. Located in Glen Ellyn, a western suburb of Chicago.

PADI 5 star dive center located in the western Chicago suburb of Aurora. Directions, hours, equipment, training, news, and events.

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.

Contains club membership information, including downloadable forms, photo galleries, guestbook, and calendar of events.

State-wide coalition of skin and scuba diving clubs and individuals. Meeting minutes and schedule, clean-up dives, photos, newsletter, and contact information.

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.