"Fluorescent dive" light

[tengsr]

When I first heard about this, I did a bit of research and found that the actual UV lights burn some of the sea life cause UV is nonexistent down there, whereas the blue light and filter won't. Like sunburn I guess

 

[iztok]

When I first heard about this, I did a bit of research and found that the actual UV lights burn some of the sea life cause UV is nonexistent down there, whereas the blue light and filter won't. Like sunburn I guess

Considering mantis shrimp use UV light to see your statement makes no sense.

Mantis Shrimp Use "Nature's Sunscreen" To Tune UV Vision | IFLScience

 

[LarsB]

When I first heard about this, I did a bit of research and found that the actual UV lights burn some of the sea life cause UV is nonexistent down there, whereas the blue light and filter won't. Like sunburn I guess

See Effects of UV or blue light on marine life for a discussion of this.

Summary:

Research into the effects of UV or blue light on marine life is still outstanding. It is known that light at night in general may disrupt the circadian rhythm of sleeping animals, or may even disrupt their reproductive cycles. Parrot fish for instance produce a "sleeping bag" made of mucus. If woken up and caused to flee, they will not be able to produce another one and will spend the rest of the night unprotected from predators and parasites. Direct damage from the strong light of the UV or blue light torches is a suspected possibility, but the energies involved are much lower than those of the ultraviolet and blue radiation from the sun during the day, at least at shallow depths, especially when considering the usually very short times of exposure of the organisms to the UV or blue light torches of a few seconds, or at most a few minutes. Moreover, the torches used for fluo diving are no match by far for the high-power lighting systems used by reef tank owners which are much brighter, used at much closer range, and burn for many hours, every day. This is common practice since 1959. If this was harmful to their marine organisms, reef tank owners would have noticed so a long time ago.

See also On The Rise: Fluorescence Night Dives / Background, Basics and Techniques: History:

In 1959 Rene Catala, Director of the Noumea Aquarium in New Caledonia, was the first to systematically test corals for fluorescence with UV light in his aquarium. He built displays with fluorescent corals at his own aquarium as well as in Antwerp, Belgium. Aquarium displays of fluorescent corals using what is known as „actinic lighting“ have been an indispensable attraction ever since, both in zoos all over the world as well as among amateur fish and reef tank owners.

 

[Steve175]

Light & Motion


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[LarsB]

P.S.:

You can also share (or ask) everything related to fluorescence diving and underwater fluorescence in this Facebook group and Google+ community.

 

[jdevic]

I have a YS03 and want to try flouro dive at Roatan for my xmas vacation.

My understanding is that the barrier filter is just a yellow filter. So my regular Tiffen yellow 12 should work for my housing.

is there any difference between those glow dive excitation filter for strobes and regular blue gel filters for lighting on dry land?