Deep Diving: Discover another world
*** Deep Diving ***

Discover a world still unknown!

The vast majority of underwater photographers are content to explore areas close to the surface. In less than 30 meters deep for the most part. Some photographers go down from time to time up to 60 m, but they are already few. After 60 meters of depth, the number of divers completely collapses. Of these, the proportion of underwater photographer is tiny. Yes, we are very little to evolve and photograph at such depths.
The small number of divers moving at these depths is mainly due to the commitment that this type of diving imposes. It is no longer a question of recreational diving but rather of technical diving, often called: Tek diving.
These dives involve a strong personal commitment, technical and financial. Above all, it will be an experienced diver to consider training on a closed circuit rebreather: The essential machine to descend to these depths. But this is not enough! After acquiring an indispensable experience with these machines in shallow depth, it will be necessary to pass a Trimix training!
Once this Trimix training is acquired, the twilight zone becomes accessible. But not without consequences and without risks!
This type of diving involves the management of several gases. Some of these gases are hypoxic. it means that you can not breathe them on the surface, or close to the surface. Others are enriched with oxygen and have a breathable depth limit. Each gas is adapted to a depth range, which makes the dive complex. This type of diving involves a long training, practice and training. Each immersion requires precise planning with a decompression protocol adapted to diving. Decompression times are very long. A few minutes spent in the darkness of the depths you will be worth several hours of decompression with a rise to the surface at a controlled speed. During this lapse of time, the diver is vulnerable. It must not exceed the virtual ceiling or risk serious complications, not to say a fatal outcome.
Deep diving is out of reach for everyone, deep diving photography is even less so.
Taken between 70 and 120 meters deep (and soon more), a large number of photographs of this gallery are unpublished. Being in contact with an international and multidisciplinary group of scientists and oceanographers, these photos are the subject of studies and each shot brings a little more information on this environment which is still very poorly known.
See all my deep photography with this link : DEEP DIVING : Discover another world
A picture taken at 95 m depth during a descent into the twilight zone.
A panorama of 180 ° composed of 10 photos. At 97 m depth, in the middle of the twilight zone, the edge of the 3 rd is scattered with small caves or cavities. Above, a field of coral antipathair type caps the edge of the drop. For the record, 5 minutes after taking this picture, a schoal of at least 100 hammerhead sharks have swam in the blue, in limit of visibility. The magic of the Twilight zone.
Just a photo without much interest if it is to show the atmosphere that is 110 meters deep. Photo taken in daylight, in my back, it is the darkness that takes place in the dim light of the sun.
A 300-million-pixel panorama made in this cave at a depth of 78 meters. This cave was created tens of thousands of years ago, when the level of the oceans was down after a glaciation. The onslaught of waves on the cliff, which was once the coral reef, to dig over time all a series of cave or overhang like this. We can notice that the vault is bursting with color. Despite the tiny amount of light that reaches this place, the biodiversity that develops there is extraordinary.
A beautiful meeting with this giant grouper who came to see us 70 meters deep at the end of the dive. We stayed 5 minutes deeper to observe it. That cost us 30 minutes more decompression. But it was worth it.
It is an unusual setting that we meet at 93 meters deep. On the upper part of the 3rd floor, a succession of whip coral of different colors marks the way back.
Depth: 78 m.
Colored mosaic in the mesophotic zone. Although there is only a tiny fraction of the sunlight that reaches these depths, organisms living in this environment adopt a variety of color worthy of the most beautiful rainbow.
Photo taken at 85 meters depth on the sand beach between the second and the third tombant.On could believe that this sandy area is poor in biodiversity. but if you look closely, you will find a multitude of organizations that find refuge there.
You must also pay attention to the coral of the previous photo. Indeed, it has small inhabitants not bigger than one centimeters. These translucent shrimp are extremely difficult to see and even more to photograph. What is certain is that they are not bothered by photographers at this depth. Difficult to identify this kind of specimen. The experts will at most identify the family. The genus and the specimen being virtually impossible on photo identification. Photo taken at 92 meters deep.
Photo taken at 70 meters depth. I am at the start of the vault of the second fall. About ten meters below my fins is the foot of the second falling. To the right of the photo, we notice the cavity, digging thousands of years ago, by the waves when the level of the oceans was 80 meters lower. This type of training is typical of the second fall.
It remains a little less than 20 meters to reach the target depth of 120 meters. We are at the edge of the 3 rd drop that plunges almost vertical to more than 200 meters deep. Behind the divers, the stop that we see is the top of the second drop that is 60 meters deep, 40 meters above us.
An emperor shrimp on a Coriocella nudibranch.
Photo taken at 69 meters depth.
This famous starfish met this time during our recovery, to a depth of about 105 meters. This starfish, of which less than 5 individuals have been reassembled in the world to study, is present on the external slopes of Mayotte, below 70 meters deep.
We continue our recovery to the surface. After having crossed the false flat which separates the two cliffs, we arrive at the foot of the second falling to a depth of 80 meters.
A panorama composed of 11 photos to cover an angle of almost 180 degrees. Photo realized at 80 meters depth, under the twilight zone.
It is always difficult to produce a panorama in open water. You have to have an idea of the final rendering. for that the composition of the photo is essential. In the end, it is the composition of the assembly of all the photos that will emerge. So it is very difficult to realize the final rendering when shooting. But with a little experience, we get there !!!!
My friend and partner Olivier browsing the crest of the third fall. A few minutes spent 100 meters deep will cost us 2 hours of decompression for this dive.
This Galatheidae of soft coral is not yet identified by specialists. Maybe a new SP? Hard to say at this point. What is certain is that it is rarely photographed.
Photo taken at 80 meters depth.
A spider crab in its coral. Specimen having an egg glued to its tail. Spider crabs are present in the twilight zone. we regularly cross from 70m to 100m. This one was photographed in the cave of Sanctutum by 70 m of depth.
The same spider crab (Chirostylus) photographed 70 meters deep in Sanctutum Cave. we can even see the eye of the fetus inside the egg.
A beautiful little shrimp on a soft coral of the mesophotic zone. They were several dozens on this coral at the foot of the second falling Bouéni pass.
A beautiful discovery from a dive to 120 meters. Arrived at 95 meters deep, my eye is attracted by what seems to be a twig that floats between two waters. It is not so, it's beautiful is a delicate red phantom fish. I think it is a juvenile because this specimen is no more than 3 centimeters long. Once again, we prove that the mesophotic zone is very poorly known. Indeed, according to specialists, this fish lives between 0 and 35 meters deep, which is wrong!
A tiny shrimp perfectly camouflaged on its soft coral.
Photo taken at 85 meters depth.
In the middle of the penumbra, at the edge of this impressive fall, the lighthouse of my friend Olivier illuminates the almost vertical wall. Above us, 100 meters of water separates from the surface. Below us, a mu that goes down more than 200 meters deep. The atmosphere is mystical, as if we were in another world, and it's a real. Panorama composed of 7 photos for 240 million pixels.
A panorama made at 100 meters depth. We must be only a small handful of photographer to make this kind of shot. I am so "amused" to get off a tripod with a panoramic head "Home made" to make this shot somewhat unique. Composed of 9 photos for a total of almost 200 million pixels. I am about 20 meters from these magnificent formations connected by an arch. This picture cost me 150 minutes of decompression, but it was worth it. You appreciate the size of these structures by comparing them to the size of the diver.
Olivier, my friend and binomial  diver depth in the cave that was nicknamed "Sanctutum" ..Photo taken more than 70 meters deep.
Another photo taken in The Cathedral at a depth of 73 meters. Difficult to evaluate the unusual dimensions of this cavities. But the picture speaks for itself.
A panoramic photo to highlight the impressive volume of this cavity. The entrance that can be seen to the right of the photo is at a depth of 70 meters. I am 70 meters deep to make this photo. The roof of the vault meanwhile is a little over 65 meters deep. .Panoramic composed of 20 photos for 300 million pixels.
It is literally inside the reef that I realized this panorama of 288 million pixels. I discovered this cave on May 19, 201! with my friend Olivier present on the photo. At this time, we had trouble to realize the imposing volume of this cave.
Photo taken at 75 meters depth ...
Deep Diving: Discover another world
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Deep Diving: Discover another world

Diving betwen 70 to 120 meters deep under the Twilight Zone.
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