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Koh Tao
About Glow Scuba
Ultra Violet Night Diving and Snorkeling, Koh Tao - An experience like no other! UV Dive or Snorkel with Glow Scuba & expect to see a magical array of florescent colours in the ocean. See corals and other marine life in a different dimension! If your coming to Koh Tao its a true must see, a mind blowing experience you won't ever forget. We are based at Goodtime Adventures in Sairee Beach where you can UV Dive or UV Snorkel off the beach. Also based at Master Divers in Mae Hadd where we offer primarily UV Diving. We only take out small groups too so you will feel safe to enjoy the magical experience.What is coral fluorescence? Well under certain light wavelengths some species of corals exhibit a phenomenon known as fluorescence where the coral itself appears to glow in shades of green, red or blue. Corals that normally appear dull brown in the daytime or under white light can take on vivid rainbow hues. Corals fluorescence when certain pigments inside them react to strong light absorbing the cooler blue end of the spectrum and reflecting back greens or reds. The phenomenon of Coral Fluorescence is still full of mystery and the reasons why certain coral fluoresce are to this date unknown. Strangely enough not all corals fluoresce, and only a few species possesses this unique property, which further complicates the search for the reason why corals glow in the first place. There are several theories provided by scientist, and perhaps the most likely reason is that it acts as a kind of “sun block” for the coral protecting the zooxanthallae inside the coral from the harmful rays of the sun. Marine Biologists say that this property could perhaps protect shallow coral from bleaching or provide deeper coral the ability to absorb the UV light from the sun and reflect it back to the zooxanthallae allowing them to photosynthesize in the absence of sufficient sunlight.
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Reviews (23)
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1 - 10 of 22 reviews
Reviewed July 29, 2014

After more than 250 registered dives I thought I had nothing new to see. Well, I was wrong. UV diving is a whole new experience like nothing I ever saw. It's a night dive so you only see what's in your flashlights beam. But, while...More

Date of experience: February 2014
1  Thank yoelte
Reviewed March 19, 2014

I had a great time here doing the UV-dive. Nice DM and an great experience. Its so much different to an ordinary nightdive.You should really check it out!

Date of experience: February 2014
Thank Il_Professore_80
Reviewed February 26, 2014 via mobile

We booked the uv night dive with Master Divers and had an unbelievable dive. A totally different experience to a night dive that we will never forget.

Thank Sjoyce1983
Reviewed February 9, 2014 via mobile

With care and friendlyness dennis taught us how to dive with UV light. After a short theoretical intro and fitting the gear we went to an on shore amazing beautiful shallow coral and experienced a mushroomtrip only without mushrooms :) The coral and some fish...More

Thank JackJack1983
Reviewed February 6, 2014 via mobile

Best dive I've ever done this including diving with whale sharks and mantas! Everyone on our boat was doing UV which meant we had no interfering white light. This allowed for us to get the full UV experience. The way the coral glows is out...More

Thank Chris T
Reviewed January 30, 2014

We did a UV night-dive with Goodtime Adventures, and I'm sad to say that I would not recommend this shop to anyone [Disclaimer: See my info on UV night dive on the bottom]. Now Koh Tao is a relaxed island, and I appreciate that a...More

Date of experience: January 2014
1  Thank Philip M
Reviewed January 23, 2014 via mobile

This was fantastic. A whole new world. I've been snorkeling for over 25 years, this was the most unique experience ever. Seeing coral heads glow form under others was eerie. Dennis showed us some glowing sand crabs. Provided us with wet suits as he thought...More

Thank paulbR6196XI
Reviewed January 18, 2014

had to amazing dives with craig and dennis from glow scuba definitely the best way to see the under water world in a new light seen so many new thing you would not see during the day or under normal torch light. highly recommended had...More

Date of experience: January 2014
Thank william-g85
Reviewed January 8, 2014 via mobile

Did my first uv-night dive yesterday with Master divers at Koh Tao. An amazing experience! It really makes you see the underwater world in a completely new way. Highly recommended!

Thank anelai
Reviewed January 6, 2014

Dennis is great. We booked through Master Divers on Koh Tao, but I know he works with many shops. Would definitely do this again - hopefully sometime with clearer water/better visibility. It was pretty murky while we were there and with the small-range blue lights,...More

Date of experience: December 2013
Thank Beth B
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