- Big Blue Planet
 - Provides detailed information for all the best scuba diving locations on the planet including climate, water temperature and visibility, maps, reviews, and more. - Dive Buddy
- Registration service of divers from around the world. Exchange information about conditions, accommodations, equipment, and logistics.
- Diversworldwide.com
- Offers a comprehensive international diving database and provides a forum for the exchange of information.
- DivingWithSharks.com
- Directory devoted exclusively to shark diving excursions and shark biology.
- FLKeysDiving.com
- Online directory includes FAQs, information on marine life, calendar of events, and links to scuba organisations and businesses.
- Scuba Diving Directory
- Offers a database for international scuba diving and allows users to submit websites related to the subject.
- ScubaSpots.com
- Offers directory, message boards, chat rooms, classifieds, insurance, travel specialists, and more.
- Worldwide Diving Encyclopedia
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