Night diving are special dives in
recreational scuba diving which take
place at night. Considered by many as a fantastic experience as
divers will be able to enjoy more underwater life that is not
visible during the day. For
example, Lobsters and octopus that come out of their holes at night to
feed and explore the reefs.
Those guys, must be nuts!!! That's
what I said the first time I saw my friends embarking on a night dive
for their advance open water course. Of course at that time I had never
dove before and 15 years later, here I am writing and convincing you to
experience the wonders of
diving at night.
What do we find exciting
As mentioned in our page “Underwater
what brings more divers everyday to explore this world are the variety
and colors of the corals and the life around the reefs that forms a
unique panoramic view. But during the day most of these marine lives
are hiding in holes or under rocks and they are just waiting for the
darkness to come out.
||Divers are not only able to see more
variety of marine
life, but also the colors of the reefs are much more intense
flashlight. When divers switch off their flashlights, they
will be surprised at the
amount of light that is reflected from the moon and the stars on a
Another factor that always impresses night divers is the chemical
reaction created by certain types of planktons. The bioluminescence is
phenomenon that occurs when the planktons are moved in the dark causing
them to emit light. To experience this you have to turn off your
flashlight and wave your hand through the water.
How late are the night dives done?
a whole experience, divers start assembling the equipment when there is
still daylight and wait for the beautiful sundown to begin the dive.
You will never do a recreational night dive at crazy hour... I will
rephrase that… Only in special circumstances will you do a night dive
at a crazy hour. Sample: New years’ party… Oh yes, there are some
who have done it.
What are the risks of diving at night?
Beside the recreational, the darkness creates additional hazards. But
can be enjoyable by just practicing
safe diving and following some special
guidelines for night diving.
already mentioned, night divers require the use of a flashlight that
fail underwater resulting in losing visual references
and being unable to control depth or buoyancy. This flashlight failure
also unables divers to read instruments such as dive computers and
This should not be a reason to panic if you follow the guidelines
for night diving,
you will know to stay close to your assigned partner or dive buddy. If
by any chance you are not close to your partner, it is impossible to
lose the reflecting light. What we mean is that the light from a diving
flashlight can be seen on a greater distance underwater.
Leading the night dive.
|A major responsibility goes to the
leader or person that is leading the
group on night dives. Due to the darkness, navigational skills must be
at 100% and the use of a compass must be mandatory regardless of the
experience. Compasses are important because your visibility narrows to
what you see thanks to the flashlight. In some cases at night, divers
can swim in circles or take longer than normal to find a point of
reference underwater. To begin, you should never make a night dive at a
location where you have not been diving before during the daytime.
leader and assistant must always have extra
the dive. If by any chance the leader runs out of extra flashlights,
the leader must decide to end the dive before there is another
|During a night
dive, assisting another diver that has difficulties with his
(tank, regulator, weight belt or flashlight) underwater can be of
concern. You probably will need both hands and your flashlight will
be in your way. At the moment that you engage to fix the problem, you
will lose all references that you had (point of reference, buoyancy
reference), and will have to star from zero after the problem is fixed.
The leader of the group must know that the group is
together. He only has the light of each diver as a reference to know
no one is missing. So, it is important to keep your diving flashlight
on at all times and only switch it off when asked by the group leader.
guidelines for night diving.
- Night dives have to be done safely, they
must be properly organized.
- Night dives must be done at limited depth
or shallow waters (less than 20 meters/ 66 feet).
- The descending area must have a rope or
be less than 10 meters/ 33 feet.
- Dive location must be protected from
boats. Or use special buoy at the surface.
- When planning a night dive, the
of the dive location must be at its best.
- Never make a night dive at a location
where you have not been diving before during the daytime.
- It is very important that everybody
participates in the dive briefing and understands diving signals.
- All divers must respect the dive plan.
- Always dive with a partner or assigned
- Avoid shining your light in other divers'
- Keep your diving flashlight on at all
times and only switch it off when asked by the group leader.
- The use of a compass must be mandatory
regardless of the experience.
- Always bring backup flashlight.
- Always keep visual track of your buddy by
watching for his light beam.
- Keep constant communication between you
and your diving partner.
- When using a boat: boat driver must have
knowledge of the dive plan, dive signals and must have a flashlight for
- Avoid diving inside caves or wrecks at
- Must use a light beacon at the beach for
signals used durnig Night Dives
is mandatory to always review diving
with friends and strangers. Please hover the mouse
over the diving signals for demonstration.
|| Signal for
A circle with the diving
flashlight represents "okay". Also
represents the question: ARE YOU
OK? And it is also used to respond with the same signal: YES I AM OK.
Same signal is used at the surface.
||Signal for Problem:
moving the flashlight from side to side represents a problem or diver in distress.
You must wait for your partner to be close to you and explain your
situation. The problem signal is also moving the
flashlight up and
down. The signal varies from region to region.
||Some night signals can
be made by just putting your hands in front of the flashlight.
||The best way to communicate at
night is by putting the flashlight
facing your chest and away from your eyes. The light will illuminate
your chest area making it easy for your partner to see and understand
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