Aqua Diving Academy
- Retail dive facility in Portland. Includes hours of operation, wet suit lines, and contact information.
- http://home.gwi.net/~aquadive/

York Beach SCUBA
- Retail dive store. Nitrox, rebreather, dry suit, and underwater photography training.
- http://home.gwi.net/~ybs/

Seafari Charters
- Private boat charters including diving. Rates and policies, pictures, and directions.
- http://www.seafaricharters.com

Sea Venture Charters
- Dive charter operator operating out of Port Clyde. Offers dive trips with shark cage dives, wreck and seal dives, and PADI courses.
- http://www.divefishmaine.com/