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diveconjeff
06-10-2010, 06:41 PM
I just got back from a quick trip to Cozumel. Typically I take this trip with my wife and we do a few days of OW diving on the island and I ferry over to the mainland for a few days of the Cenotes.

This time around, I thought I would try to find some cave diving on the island and avoid the ferry trip. I had seen Germ Yanez’s name mentioned here a few times, so I contacted him to see if he would be available for a couple days. Turns out everything fell into place very nicely. I also mentioned to German that I would be looking to bring my camera with me and he could suggest dive sites accordingly.

When OW diving, I usually catch a fast boat from Caleta Marina and head out to the reefs. Turns out the Aereolito system mere steps away from that very same marina. Even more amazing is the extent of the system. I seem to recall German telling me there is over 60K ft mapped out.

On the first dive we entered the Aereolito system, jumped off the mainline and went to Bosanic Pit. This was a very pleasant dive and rather shallow for the most part and never exceeding 60 feet. Since German and I had never met, I suspect this was his “size up the other diver dive”. The dive was relaxing, and a pleasant warm up dive. During the dive we were constantly traversing the halocline. Pretty significant how the vis changes from simply following the number 1 diver as opposed to following with a slight offset.

The second dive of the day was a bit different. As German works for one of the governments environmental departments, he has some special permits. We took the main road past Caleta for a Kilometer. Suddenly he pulled over to the side of the road saying, “We are now 500 ft. away.” As I looked about, all I could see was jungle. I am talking about overgrown, dense brush, mosquito infested jungle. He looked at my eyes and said “Trust me, there’s a path.” This system is called Chankanaab. It is directly inland from the reef with the same name.

We geared up at the back of the truck and just before entering the jungle, German handed me a bottle of water. He instructed me to dump half on my head and the other half in my wetsuit, “…to avoid getting heat stroke.” And so began the jungle trek. Interesting enough to walk through the jungle in 90+ degree heat wearing a 5 mil suit and doubles, but I was also carrying a very non-compact camera rig that probably goes 30-35 lbs as well. Ducking under branches, stepping over barbed wire fences, quite the adventure just to get there. I am not certain about the 500 feet, but I am guessing that a Mexican foot must be a bit bigger that an American one as it seemed to take forever.. Man was I happy when we got to the water.

The name of the dive site was so off we went into Chankanaab following the mermaid line. This was my first encounter with the greatly discussed Mexican “T” system. We discussed the dive plan in some detail as to the expected navigational choices and methods of marking passage. In retrospect, I did not see any significant differences in navigating the T’s other than the fact I would need to carry more markers than a typical NoFL dive. Again this was a long shallow dive, as we never got deeper than 30 feet. Some interesting decorations

The second day we picked up tanks and drove out to Xcan Ha. This is the site of a traditional Mayan steam house; an easy access dive site and one billion blood sucking mosquitoes. The dive itself reminded me of a somewhat smaller version of EN. While bottoming out at just over 150, it offered a few other perks. The basin was extremely tannic with perhaps a foot of vis and a rather fragile looking line down to the cave. Once through the tannin, we entered the hydrogen sulfide layer before getting into some reasonable vis at 30 feet or so. At this point we tied in a primary reel and continued our descent and soon came to the summit of a seemingly endless debris cone. Continuing down the side of the cone I noticed several passages breaking away at around 130 feet, but did not enter any of the beckoning passages on this trip. We circumnavigated most of the cone at depth then began our ascent, as we were not equipped for any significant deco time.

As an aside, what a difference perspective makes. During the entrance we went in following the line in pretty much in a heads down attitude in order to maintain visual contact with it. New cave to me, so very focused on the line I suppose. On the way out, as we returned to the vicinity of the halocline, I saw a huge stalactite. I’d estimate it must have been at least six feet in diameter. How does one miss something that big ??? Unfortunately, due to the turbidity of the water, I could not get a decent photograph of it.

Exit from the water was a mixed affair consisting of amazement of what I had just done and seen, and dread of the return trek to the truck. However, now that it is behind me, I am certainly glad we went.

For the final dive, we returned to the Aereolito system and took a different route this time. Again after careful review of the plan, we undertook several jumps, several of which were unmarked, as in “reserved so they don’t get messed up” and went to the Dead Zone. This turned out to be cave that was nothing short of spectacular. Wonderful decorations, a few restrictions and memories to last a lifetime. It was completely different from but equally as spectacular as the China Garden over on the mainland. Where the decorations in the China Garden are delicate and light in color, the decorations in the Dead Zone were mostly dark and more substantial. They were also arrayed in such a fashion that I could not afford to spend much time looking through my camera lens.

I am looking forward to going back to Coz, but now I will have an even harder time figuring out where to dive. I highly recommend German for his attitude, experience and local knowledge.

Tried to post some pics from my Mac, but I got frustrated for now as the Mac is new to me. I'll try and put some up later. If any Mac users have tips, I am all ears....

LCF
06-11-2010, 01:09 AM
Thank you for the report! I did my cavern and Intro classes with German. He is a lovely, irrepressibly cheerful man and he loves his caves.

When I did Aerolito with him, I was really amazed at the amount and variety of life that was in the cave, even quite a ways in. Apparently there are a number of unique species there. Did you see any of the clams with the crimson mantles?

diveconjeff
06-11-2010, 06:44 AM
Thanks for reminding me!

Yes I saw a number of the crimson mantled clams. Every time my light would hit one they would do that flutter/swim away. Kind of got me wondering how a blind creature senses the light...

Also saw a number of urchins, brittle stars and banded starfish that are unique to the area as well.

Doing or second exit from Aereolito, we were greeted by a barracuda in the cavern zone. This was also a first for me.

diveconjeff
06-11-2010, 06:55 AM
When I did Aerolito with him, I was really amazed at the amount and variety of life that was in the cave, even quite a ways in.

Not only is there a variety of life in there, but the variety in the cave formations in a single system was remarkable as well. The two dives there after the first 200 feet seemed like entirely different systems between the fissures, the different types of passages and the variety of decorations.

Randy Thornton
06-11-2010, 11:45 AM
Thanks for the report. Sounds fantastic!

wingman
06-11-2010, 12:49 PM
I just got back from a quick trip to Cozumel. Typically I take this trip with my wife and we do a few days of OW diving on the island and I ferry over to the mainland for a few days of the Cenotes.
....

Sounds like some interesting dives, i will be heading to the Yucatan for a 2 week visit sometime between July and September. It is an environmental science/economics trip that will include a lot of diving and water chemistry data collection. I am looking for somone to coordinate with from the local dep equivalent. I have contacts at a university in merida but am looking for someone on the east coast as well including cozumel. Sound like German might be a great contact. If you could pm me his contact info i would appreciate it. Bill

alanf
06-11-2010, 01:00 PM
Doing or second exit from Aereolito, we were greeted by a barracuda in the cavern zone.

Was it big? I bumped into a huge fish in Xunnan Ha the other day. No idea what it is, but its massive. It scared the **** out of me. A big toothy barracuda would be too much for my heart.

Thanks for the writeup. I thoroughly enjoyed it.

diveconjeff
06-11-2010, 02:02 PM
No, it was just a little one. Perhaps 12 inches or so. What did the fish you saw look like? Was it large and silvery with BIG scales?

alanf
06-11-2010, 02:59 PM
Was it large and silvery with BIG scales?

No it was more carp like than a Tarpon. .There is dirty organic siphon passage that I mistook for the start of the downstream. It stays there all day long apparently. Maybe it was introduced like the large orange coloured carp in Chac Mool.

SLIM
06-12-2010, 07:59 AM
Diveconjeff

Yup that guy was in there the day before you wnt and after. I am glad I was not the only one that saw him. Sorry we missed you but Arileto is a good one to dive and get used to, with the diversity in it, it has it all.

SLIM