NSS-CDS
The Cave Diving Section of the National Speleological Society. Long-standing cavern through full cave progression, and the body behind much of the early accident analysis.
Certification
Training
Cave diving is taught progressively, in the water, by instructors. The agencies below all run recognised cave programmes.
Certification
Where to get trained
The agencies below all run recognised cave programmes. The original site's Houston-area instructor listings are preserved in the archive, but they date from the early 2000s — verify anyone's current credentials directly with the agency.
NACD
National Association for Cave Diving. A 501(c)(3) non-profit founded in 1968 to improve cave diving safety through training and education. Cavern, intro, apprentice and full cave, with a strong presence across the Florida springs.
GUE
Global Underwater Explorers. Standardised team equipment configuration and procedures, with an exploration and conservation focus.
TDI
Technical Diving International. Broad technical curriculum including cavern and cave, widely available through local dive centres.
IANTD
International Association of Nitrox and Technical Divers. Cave, trimix and rebreather training with a long history in the Gulf region.
Local instruction
Texas cave training has historically run through Houston and the Hill Country. Ask any agency above for currently active instructors near you.