Learn about Fluorescent Corals and
How to Take Video of Them

Explore the reef looking for Corals and
Marine Life that Fluoresce

Taking the Video:
Once it was dark and the coral polyps were out, our dive began. Over the corals, I turned off all white lights and turned on the Light Cannon with the Blue Exciter Filter. To my surprise, almost all the corals fluoresced. It was an eerie sight. I approached different kinds of corals and first took video of the corals with the blue light and yellow BlueBlock Filter. Flipping the yellow BlueBlock filter out of the way and turning off the blue light, I then took video with white light.

Got a question about underwater video or equipment? Send questions to Sheryl Brakey at SJB Productions.
We will try to answer them or give another opinion.

Anemone Fuorescing with Blue Light
Anemone Fluorescing with Blue Light
Anemone with White Light
Anemone with White Light

Corals at top page with White Light Corals at top page with White Light

Brain Coral Fluorescing
Brain Coral Fluorescing
Brain Coral with White Light
Brain Coral with White Light
Corals Fluorescing with Blue Light
Corals Fluorescing with Blue Light
Corals with White Light
Corals with White Light

As you look at the frames which were captured from the video you can see the fluorescence vividly. We explored the reef looking for other marine life that fluoresced besides the corals. Anemones will fluoresce as seen here.

Overall the experience was enlightening and well worth the expense and effort to take video of fluorescing marine life. As we get more experience with the technique, we will eventually put together a Fluorescent Corals Video.

For more information on Fluorescent Coral Video, check out the NightSea website.

A Note on the Underwater Kinetics Light Cannon 100. This is one of the most impressive underwater lights which I have ever used. The HID lamp may be the reason. Although only 10 watts, it light up the reef. It can be used as a night dive light or a video light (comes with a diffuser filter). I am using it as a backup to my video lights which only have a life of 45-50 minutes. It comes with either Alkaline C-cells or Nicad rechargeable batteries. I chose the Alkaline for price reasons, but the burn time on a set of batteries is over five hours. You can convert to Nicads if you change your mind later. Another plus is that it can be used in or out of water. Great when trying to find everything after a night dive.

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A phenomenon, seen at night with a blue light and a special yellow filter, is Fluorescent Corals.

The reason that corals fluoresce is unknown and is only now being studied. Fluorescence is not the same as bioluminescence. NightSea does a nice job of explaining the difference in these two phenomenons and about Fluorescent Corals in general.

We took our Fluorescent Corals Video in Curacao, but there are Fluorescent Corals and marine animals all over the world. More are being discovered as more people look for them.

Since it takes special equipment, we contacted NightSea to see if they could adapt a filter for our underwater camcorder housing. Charlie Mazel
was very helpful and responded quickly to our requirements.

The equipment used:
Light and Motion Mako Housing for PC-100 Camcorder
Sunray Elite Video Lights
Underwater Kinetics Light Cannon 100 with HID (high intensity discharge) bulb
NightSea Blue Exciter Filter with elastic straps
NightSea yellow BlueBlock Filter
inside Mako Housing which flipped out of the way for regular video.
NightSea yellow BlueBlock Filter Visor (2--one
for my dive buddy)

Fluorescent Corals with Blue Light
Fluorescent Corals with Blue Light


































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