Night and Limited Visibility

Limited Visibility/Night Diving

While having great visibility and broad daylight is always desirable, it’s foolish to limit your diving to times and places where it exists. Night diving is different from limited visibility diving because with a good dive light, night diving is only limited in visibility by the quality of the dive light being used. Since other divers cannot see unless they are looking, you will learn the basic dive light signals and the minimum equipment to be worn.

The world underwater as you know it in daylight becomes a totally different world at night: Lobsters, octopi, eels, shrimp, crabs, bio-luminescence and more. Colors are more brilliant at night than when competing with sunlight during the day. It’s a whole different world at night. Lessons of experience:

  • Light sticks are no longer acceptable for night diving.
  • The use of a buddy line between is often helpful.
  • The planning process is more critical than for regular dives.
  • Sticking with the dive as planned is crucial.
  • Know where all your equipment is at all times.
  • Be able to set up your equipment in the relative dark.
  • Comfort and good buoyancy control are paramount.
  • Most any dive can become a limited visibility dive when/if another diver kicks up the sand or mud.

Our pool is uniquely equipped to make this course interesting and fun. We get students acclimated, then turn off the lights. The result is a realistic simulation of actual Limited Visibility/Night Diving conditions.



This course has the following prerequisites:

  • Be at least 12 years old.
  • Possess a minimum of Open Water Diver certification.
  • Be able to either answer No to all of the questions on the RSTC Medical History form, or secure a physician’s approval prior to taking part.



This course consists of one classroom/pool session. If you would like to receive a Specialty Diver certification for this course, you must also complete open-water training dives. Your instructor will have details.



All training takes place right here at Harry’s Dive Shop. We are among the few dive centers in the country with our own indoor, heated swimming pool. This 16-foot-deep pool was designed specifically for diver training. It provides unbeatable convenience and enjoyment.


This course is just one component of our complete Advanced Open Water Diver program — although it can be taken separately, subject only to time of year and instructor availability. Please contact Harry’s Dive Shop for more information.

How Much?

How Much?
Course fees may vary depending on group size, time of year and other factors. Base price for a group of at least two people is $225 per person. Please contact Harry’s Dive Shop for more information.

The course fee includes:

  • All instruction.
  • Self-study materials.

Students are responsible for supplying:

  • Personal diving equipment (see list below).
  • Certification card processing.

Your instructor will have details and costs for the optional open-water training dives.

Required Equipment


students are responsible for supplying the following:

  • Mask, snorkel, fins.
  • Weight system, weights.
  • Adequate exposure protection.
  • One cylinder.*
  • Buoyancy Control Device (BC).*
  • Regulator/alternate air source.*
  • Primary dive light.
  • Backup light.
  • Tank marker light.

*If you do not own these items, you can use ones from the rental department at Harry’s Dive Shop for the pool session.

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