Full service dive shop. Training, service, sales, photo gallery, local diving, newsletters, and contact information. Located in Chicago.

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.

Full service dive shop. Training schedules, newsletter, trips, and contact information. Located in Eastern Illinois in Moline.

Full service dive shop. Training, SCUBA equipment sales and repair, trips, maps, and contact information. Located in Hanover Park, a 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.

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.

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.

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

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.

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.