United Diving Instructors

The United Diving Instructors (UDI) is the diver training organization founded in 1983 by Z. Fisher and H. G. Golzing in California, United States.

Kids programs

 * Junior Diver *
 * Junior Diver **
 * Junior Diver ***

Recreational diving certifications

 * Pool Diver
 * Basic Diver
 * Open Water Diver
 * Advanced Open Water Diver
 * Special Diver

Specialty courses
UDI provide a range of specialty courses, examples of which include:
 * Orientation and Compass Diver
 * Night Diver
 * Deep Diver
 * Rescue Diver
 * Dry-Suit Diver
 * Drift Diver
 * Mountain Lake Diver
 * Cave Cavern Diver
 * Ice Diver
 * Diving Technician
 * Compress Diver
 * Wreck Diver
 * Mixed Gas Diver
 * Apnea Diver

Professional certifications

 * Open Water Instructor *
 * International Instructor **
 * Staff Instructor ***
 * Honorary Master Instructor ****