Category Archives: Uncategorized

Trying to get back!

Aiar Ghelber on Rebreather with Maria on open circuit in Cozumel

With the pandemic of 2020, last year was the longest surface interval I’ve had in a long time. It’s been hard not getting back to blue water for so long because for me it provides a opportunity to get away from the office and to explore an environment that is completely different. There are so many things to see in the deep blue sea, and yet it is relatively quiet. Of course on a good day you can hear the fish feeding on algae on the reef. Unfortunately, Dallas is nowhere near any blue water. Although diving in some local lakes did provide some opportunity to see some aquatic life in 20202, the variety of marine life in Texas lakes pales by comparison with almost any blue water I’ve ever seen.

When the opportunity came to dive Cozumel in February 2021, I jumped at it. Thank you Gulf Coast Scuba for inviting me to join the trip and bring my rebreather and my camera. Thank you for making all of the arrangements with the local dive shop Deep Exposure who made sure we had sorb, tanks and boosted 02 and made sure we saw a variety of dive sites.

We had a very capable group of divers on the trip most of whom were open circuit divers, but three of us dove rebreather‘s.

Mike and Maria exploring the reef on a sunny day

Here are my general observations of the trip. First Cozumel like most dive communities around the world, has been hit pretty hard by the pandemic. Although Cozumel may have started opening up over six months ago, Cozumel at this time has nowhere near the crowds of people who typically travel there to dive.

Second, the locals seem to be doing a pretty good job at trying to keep Covid under control. There was lots of hand “tequila” and masks were used indoors, but less so outside.

Third, the reefs look to be in pretty good shape because there hasn’t been a lot of diving pressure on them for about a year. There was nowhere near the crowd of divers on the reef today. It was nothing like what I recalled from years past.

School master and grunt hiding under a sponge

Diving my Hollis prism rebreather on the reef was challenging and exciting. As usual in Cozumel the current was moving pretty quickly. It was not uncommon to have 2 plus knots of current to drift long the walls. Since several of our dives were in the 80 minute range we covered a lot of reef in each dive.

As long as you were not headed into the current the rebreather was fine. The few places where we had to cut across the current even though it was for just a short distance it was very challenging.

But, the thing that was most fascinating to me was how close we could get to the fish and aquatic life while on the rebreathers. Open circuit divers could not even begin to approach how close we could get. We had quite a few turtles practically swim right up to us and we had fish that were so close we could have petted them if we wanted to.

Silver sailor fish hiding under sponges

Another challenge, the underwater camera housing, lights, etc that I dive with act like a sail in the current. Even though the camera system is almost neutrally bouyant it’s bulk was still a pretty good challenge to handle.

We did have some technical challenges. Before leaving on the trip I had replaced all three sensors for my rebreather. I tested them in the pool. They were fine. I got to Cozumel they failed. I would’ve been cooked had it not been for the one of the co-owners of Gulf Coast scuba, Aiar Ghelber who came up with three new sensors for my rebreather. I think in the future I will probably travel with 3 backup sensors, just to be on the safe side.

Trying to get the camera in position to take pictures that looked like something was not an easy endeavor based on the current. In fact, it was exhausting. But ultimately I did get a few shots that I like.

So is it time to go back to Cozumel? Well I might wait a week or two to catch up at work, but hopefully reasonably soon I will be back.

Sun ball over the reef

How blue is blue?

Underwater Librarian

I was looking through some images from the different places I have been and it struck me that when we refer to blue water, that there are a nearly infinite variety of shades of blue that we see underwater. Well maybe not an infinite, but there seem to be a lot. Some of the clearest blue water I can remember seeing was in Tonga. Yep those hump back whales swim in pretty blue water.

Momma whale with calf

But then there is blue water that just seemed even bluer to me maybe because I was ready to get out of the swim through or just tired of having someone swim over me.

See the guy in front he swam over both of us; would not want to wash his wetsuit

Then there is blue water that sometimes just shocks people, I guess because it is so full of life .

Diving is exciting, just try to keep things under control

Sometimes even when we are fairly deep the water is so clear it just seems more like diving in gin, except without the alcohol.

Megan exploring Cistern Point

But regardless of the shade of blue or the depth of the water it is just interesting to me to see what we see in the deep blue sea.

That’s all folks

Sometimes you just have to be creative

In north Texas it is hard to get excited about getting all geared up with scuba gear and an underwater camera to take pictures underwater when the water is in the 50s and the visibility is in the teens. Sure you can swim around and find a fish or two, but it seems like an awful lot of work, particularly for someone like me who is basically lazy. So as I was wracking my brain for ideas for what to shoot at this time of year underwater I came up with the thought of why not create a wreck or two out of legos and see what it looks like underwater?

Well the first problem that had to be overcome was how do you get legos to sink? What occurred to me was maybe some water proof glue with some big washers or bolts glued to the bottom of a legos 10 X 10 sheet would work.

As I found out, four large washers will sink a standard 10 X 10 lego sheet. And, I figured out that with just a few attachment points the legos figures I was able to build would actually adhere to the 10 X 10 lego sheet.

The next challenge was how much do I want to spend on legos and mini-figures to create these submersible platforms. I found much to my amazement Legos really seem to hold their value. I was quite surprised that used mini-figures go for $5 bucks or more a piece at the local used lego store. I made a comment at the local used legos store about the mini figures holding their value, and the owner looked at me like: well duh! what planet did you come from.

I looked at eBay and found that here and there there were a few mini figures that would cost about $2 a figure, but that still seemed pretty pricey for something that might or might not work.

So it was back to the legos resell shop and buy an assortment of bricks and see if I could build a wreck or two out of the assortment of legos. It was a bit interesting to see what came in an assortment package. With some creativity I came up with a few ideas of how to put together a few figures that looked like they might be the remainder of a wreck.

I have a few more mini figures on order so we will see if they arrive in time to be added before the next class.