Night diving can be a great way to explore a new underwater world. Night diving is a different underwater world, as many marine mammals are nocturnal. You will need to be prepared for this unique diving environment. Learn about the equipment that you will need, and how to choose a dive spot.
Bioluminescence
Bioluminescence can be experienced during night dives by simply turning off your torch and waving in the water. As you move your arms in the water, bioluminescent plankton lights up blue. This is caused by certain chemicals being vibrated to produce light.
Many marine life uses bioluminescence to attract mates and communicate with each other. Syllid fireworms, which live in mucus tubes under the seafloor and return to the surface on the full moon, are an example.
Precautions
You should be aware of the following precautions if you are new to night diving. These precautions include not being exposed to too much light and not using dive lights. These lights can affect the night vision of other divers. Exposure to these lights can also increase your risk for developing cardiac problems.
Not only should you limit your light exposure but also must you use a buddy partner. A dive partner is extra important when night diving. Your buddy can help identify potential subjects. Before you dive, practice hand signals with your buddy. Your buddy should be able to correctly use the light. To avoid direct light on the subject, instead aim it at them with your flashlight.
Equipment
If you're planning a night dive, you need some special equipment. Make sure you have backup lighting. This type of light is usually small enough to carry in your pocket. Also, you should have a modeling flashlight. This is a pinpoint light that attaches to a strobe. Divers used to use chemical glow sticks to navigate back to their boat after a dive. However, environmental concerns led to the switch to battery-operated signal light with different colored lenses.
You will also need a quality diving light and a compass. You will also need a light that gives you the ability to communicate with other divers. You will also need to know how your diving rig works. It is important that you feel safe diving at night. If you are not feeling secure, you should leave immediately. It doesn't matter if it is bad weather, lack of training, or unsafe water conditions. You might end up in a dangerous position. It is important to avoid using substances that could impair your ability to discern the truth.
Selecting the right dive site
When you're ready to dive at night, you'll need to choose a night dive site that's calm and shallow. It's not a good idea to add more gear or take a camera on your first dive. Sticking to the basics will help you get comfortable and make your first night dive a success. Start out in the twilight, and you can go deeper later.
Do your research to find the best night diving site. There are many things you should consider. You should choose a site with a history of night diving if you have never done it before. You can use the day to locate and map the dive sites. It's also warmer and easier to dry off your equipment during the day.
Night diving buddies
The choice of a night diver buddy can be challenging. You must be cautious when diving at night as the water changes very quickly. Night divers should also be prepared for cold water. It is not something anyone wants to feel uncomfortable or make the dive difficult.
Talk to your night dive buddy about your dive plans and any special instructions before diving in the dark. This includes the order in which you want to complete the dive. Additionally, you should discuss how and when you will communicate.