When going for a dive, it is important to bring your certification card to prove your diving qualifications. Additionally, bring any personal items you may need, such as swimwear, a towel, sunscreen, a hat, and drinking water. It is recommended to have a logbook to record your dives and any relevant information. If you have your own diving gear, ensure you bring it along. However, if you are renting equipment, you may need to bring identification and/or a deposit for the rental gear.