| Acronym | Meaning |
| EAR | Expired Air Resuscitation |
| SCUBA | Self Contained Underwater Breathing Aparatus |
| CESA | Controlled Emergency Swimming Ascent |
| SPG | Submerssible Pressure Guage |
| CCR | Closed Circuit Rebreather |
| DCI | Decompression Illness |
| IOC | Instructor Orientation Course (PADI) |
| DPV | Diver Propulsion Vehicle |
| BT | Bottom Time |
| MCS | Marine Conservation Society |