Hi All,
Leaving Saturday for Cozumel and have a night dive scheduled for Wednesday. This is my second diving trip so I am a little nervous to do the night dive.
Can someone tell me what to expect? I hate to be a big chicken.
Thanks
Chili
Expect some disorientation, much depends on your skill level and comfortableness in the water. Many night dives start off at dusk and it won't be truly dark when you start, but the ending will be dark getting back on the boat. The phase of the moon and cloud cover are elements that effect night dives, the fuller the moon combined with the clearer the night can equal barely needing a light as your eyes adjust, but little moon or cloudy and it's going to be pitch black and all you will see beyond the limits of the beam of your light is other lights flashing and dancing around you. The more dialed in your diving is the easier the night dive will be as the darkness adds another element to deal with. I don't recommend doing one unless you're comfortable with your diving.
Keeping track of your buddy and dive master can be more difficult in the dark, many times the dive master will use two lights at the same time so it's simple to keep track of him, but good buddy skills are important. Good courtesy skills are too, newbies on night dives tend to point their lights in other divers faces, try to avoid this. Proper safety protocol equals one main light and a back up. One light on a night dive is not proper, you don't need two major lights, just a good main and a cheaper smaller secondary. Many divers carry the cheaper secondary light on all dives as even in day light you'll be surprised what you can see in the nooks and crannies with a cheap little light. Keeping track of your buddy might be easier if you guys hang glow sticks off your tanks or the little battery operated lights they make for tanks. Plan ahead for after the dive, think about bringing some towels with you as many people get chilled back on the boat on a night dive.
If this is your first night dive, I'd recommend leaving the camera in the room for the first one, you'll have enough to concentrate on without the additional task loading of a camera or video. If you're not that experienced I'd heavily recommend only doing a night dive if it's a shallow one like Paradise, if you happen to be offered a night dive elsewhere that has no bottom under you, consider skipping it. It's quite a different experience being pitch black with no bottom you really have to have buoyancy dialed in and watch your gauges and be aware of your other senses since your eyes will no longer help you much at controlling your depth, your ears can help you sense pressure changes but in the dark you loose most of your ability of eyes to keep you from sinking deeper without realizing it.
Enjoy it, the 2nd shift of reef animals come out at night, you'll have the opportunity to see many creatures you would have a very difficult time ever seeing during the day.