| Acronym | Meaning |
| BFK | Big F*cking Knife (reference To The Diver's Knife) |
| IDC | Instructor Development Course (PADI) |
| SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| IDEA | International Diving Educators Association; Diving Instruction Organization. |
| ADT | Actual Dive Time |
| BHA | British Hyperbaric Association |
| EAR | Expired Air Resuscitation |
| DL | Dive Leader (BSAC) |
| OW(D) | Open Water (Diver) (PADI) |