SDI specialties 

SDI
Snorkeler
Scuba Discovery
Inactive Diver / Refresher
Shallow Water Diver
Supervised Diver
Open Water Scuba Diver
Advanced Diver
Rescue Diver
Master Diver
Advanced Adventure Diver
Advanced Buoyancy Control
Marine Ecosystems Awareness Diver
Marine Ecosystems Awareness Diver
Boat Diver
Computer Diver
Computer Nitrox Diver
Deep Diver
Drift Diver
Dry Suit Diver
Equipment Specialist
Full Face Mask Diver
Ice Diver
Marine Ecosystems Awareness Diver
Night/Limited Visibility Diver
Search and Recovery Diver
Shore/Beach Diver
Sidemount Diver
Solo Diver
UW Navigation Diver
UW Photographer
UW Videographer
Visual Inspection Procedures
Wreck Diver
SDI Fill Station Operator

Professional courses 

SDI Divemaster

SDI Assistant Instructor

SDI Instructor