Houston's Premier Scuba and Dive Shop Oceanic Ventures Inc.

(713) 523-3483 (dive)
5808 Newcastle Drive
Houston, TX 77401

Photography

by

Rebreather Scuba Diving – Not Just for Technical Divers


Warning: Undefined array key "file" in /home/oceanicventures/oceanicventures.net/wp-includes/media.php on line 1788
Parrot Fish in Cleaning Station by Robert Hew
Photograph (c) Robert Hew

Imagine just floating and watching a parrot fish or a grouper in a cleaning station. While you are there, you see the little fish swimming in and out of the gills while small shrimp crawl around on the fish; their claws snapping at unseen items and yet content to continue their work. At the same time, there are other fish swimming next to you apparently unaware of your presence or more like unconcerned – except of course for the Damsel fish that keeps swimming around eyeing you like an unwanted visitor to his neighborhood. This entire time, the grouper just sits there waiting for the cleaning process to be complete, never very concerned about your presence. As the grouper swims away you slide your hand into the cleaning station and the shrimp crawl onto your hand for a quick cleaning…

This is a scene experienced by rebreather divers on a regular basis. The fish are less concerned by your presence when the bubbles are eliminated. For underwater photographers, this means that you have new opportunities for exceptional photographs simply because there are more photographic opportunities available to you. Recently, I was talking with Chris Parsons from Nauticam and he was relating a story about one of his favorite local dive sites. He said he gets a lot of strange looks when he jumps in the water with his rebreather… the water depth is only about 20 fsw to 25 fsw. But he said “I just love my rebreather – I can get much closer to the subject.”

One of the things I love to do is swim with a school of fish. Tarpon or snappers will often let me join the school and swim in circles with them. It simply amazes new rebreather divers when I am able to do this. On another dive in Grand Cayman, Dave and I watched mating squid up close and personal. It was a really fun experience (of course I didn’t have the camera then).

A rebreather offers photographers a number of advantages including:

  • ability to get closer to the subject matter,
  • Longer bottom times (i.e. more photographs),
  • Neutral buoyancy even while breathing, and
  • The Marine life behavior is not modified because of the bubbles.
  • And let’s not forget, you look cool in a rebreather!

So, what if you are not a photographer? Can a recreational diver benefit from a rebreather? Remember a rebreather is the great equalizer. A student of mine once commented that the reason he started rebreather diving was so he could stay in the water as long as the better divers. He was a big guy with large lungs. Instead of being the first one back on the boat, he wanted to be the last one on the boat. So, a rebreather enabled him to achieve his goal.

Rebreathers have allowed technical divers to make some incredible dives and participate in some awesome adventures. However, they have also allowed for some not-so-technical divers to achieve their goals and open up new worlds. Some of the photographs taken by rebreather divers rival those made by seasoned professionals and new fish behaviors have been watched and documented.

Rebreathers are here to stay and units like the Pathfinder from Inner Space Systems are making it easier and more affordable for all divers. So what are you waiting for? Come join the revolution before you are left behind!

Eric Keibler
Eric’s Father used to say that Odessa (where Eric grew up) was the hub of water in the state. You can drive 500 miles in any direction and hit water but there was nothing in-between. So it is not surprising that Eric moved to the coast to be nearer to water and trees. An avid diver and sailor, Eric loves being on the water. He serves as the Managing Director for Oceanic Ventures, Houston’s premier Scuba Diving facility where he teaches both recreational and technical diving. He is also an accomplished author, photographer and sailor.

by

At the Office – Diving the Pathfinder Rebreather

Eric Keibler on a Pathfinder Rebreather in Grand Cayman
Eric Keibler on a Pathfinder Rebreather in Grand Cayman

Just another day at the office. at least that is what I tried to convince Ann was happening the past five days in Grand Cayman. One of our friends, Pam, even said that maybe they needed to “meet in our conference room.”
But really, I was in Grand Cayman to complete a training program on the Megalodon and Pathfinder rebreathers. You can ask Emma or Nancy, I was in class each morning and diving in the afternoon…you know skills, drills and well ok, some fish, corals and steel; one dive was on the Kittywake.
While I have a lot of experience diving the Megalodon rebreather, the real treat of this trip was to dive the Pathfinder in something other than the pool. Not that I mind the pool, but there is something more interesting about a vertical wall with fish, colourful corals and vibrant sponges. Remember, part of my training was swimming in the unit.
Eric Keibler and Leon Scamahorn diving Pathfinder Rebreathers in Grand Cayman
Eric Keibler and Leon Scamahorn diving Pathfinder Rebreathers in Grand Cayman

The Pathfinder is designed with a more recreational diver in mind. Underwater photographers will love this unit because it is small, easy to use and prneudes the advantage of not scaring the fish away with every breath. One of the things that appeals to me is its size and weight. The complete unit will fit in a carry on suitcase and will not require help from three of your diving buddies to put it in the overhead. For divers with camera, the unit is robust enough to go as checked luggage as well.
The unit can be configured with a standard over the shoulder set of counterlungs or with the new top of the shoulder counter lungs. One of the other configuration options is the diliuent bottle. You can configure it like a standard rebreather with the diliuent and oxygen supplies mounted to the canister or, alternatively, you can utilize the bailout cylinder as the diliuent thereby reducing the weight and simplifying the rig for the diver.
Unlike some of the other rebreather designs for more recreational divers which try to minimize any diver thought or input into the system, the Pathfinder is designed for a thinking diver. Since you can never fully factor out the human interface, Leon Scamahorn, designer of the system, believes that the diver should be included and involved in the system. This does not mean that the system is complicated but rather it needs some input from the diver during the set-up and initialization phases of the dive. Further, it offers the diver more options in dive parameters and uses.
While a purely “recreational” diver will love this unit, the Pathfinder is capable of mneung beyond what we normally consider to be recreational diving. Leon designed the unit to have enough scrubber media and system capabilities for a diver to do a typical normoxic trimix dive (using helium in the breathing mix.)
So you are probably asking what did I think about it? It was a real treat to dive a lightweight but capable rebreather. The work-of-breathing, a performance measurement, is similar to that found in the Megalodon rebreather. What this means is that it is easy to breath in the horizontal position as well as upside down and while facing up at the surface. The electronics are straight forward and easy to understand both on the surface and underwater and they do a good job of controlling the oxygen set-point or level. I found the unit trimmed well so it was easy to swim with in the water and because of its size and weight it was easy to exit the water. The scrubber packs easily and the assembly is easy and straight forward. It flushes easily and takes minimal amount of time to correct the oxygen levels.
Eric Keibler and Leon Scamahorn after Eric’ s Final Check-Out Dive for his Instructor Certification

If you are interested in rebreahers, I think this unit is a good alternative for more capable and expensive rebreathers. It prneudes a lot punch and is ideal for a photographer or any typical “recreational” diver as well a diver wanting to venture beyond the recreational limits sometime in the future. The Pathfinder is a very capable unit and may be the only unit you will need for the style of diving you have in mind.

by

Local Texas Scuba Diving – Reveille Peak Ranch

Quarry at Reveille Peak Ranch
The Quarry

Off the beaten path is a little known dive site in Texas.  It is just four hours from Houston, in the Texas Hill Country.  This site, the former home to the Dixon/Southwestern Mining Company is an open seam graphite mine.  Once the site of large draglines and steam shovels, it is now a water filled oasis in the heart of the Llano geological uplift.  This crack in the earth is filled with rising ground water, a natural spring and rain water and prneudes a natural habitat for a small number of fish and turtles.  You will find most of the fish in the shallows among the hydrilla plants that occupy the first ten to fifteen feet of water.  Below that, there are relatively shear walls or granite, marble, limestone, sandstone infused with graphite.  It is this graphite which makes the deeper depths. Interesting.  The bottom is covered with black sand and sparkling graphite.  But, this dark bottom and the orientation of the body of water make the deep parts of the seam as dark as a cave dive – little to no natural light can be seen at the bottom.   And the bottom is relatively deep with depths ranging from seventy to one-hundred feet.

Aside from the opportunity to try out your new diving lights, the quarry prneudes you the opportunity to use your hoods, gloves, heavy wetsuits or a dry suit.  The water temperature in the quarry was a brisk 71 degrees at the surface to a much colder 56 degrees at the bottom.  But, with all of these variances, there comes a treat in Texas – visibility!  While the first twenty feet had a slight green algae induced hue, the visibility was a respectable fifteen to twenty feet but drop into the cold, dark part of the quarry and the visibility grows to 40 to 50 feet.  Of course, at this part of the quarry, your light is the limiting factor.

Pavilian at Reveille Peak Ranch
The Pavilian at Reveille Peak Ranch

This quarry sits in the middle of a outdoor enthusiasts dream location, the Reveille Peak Ranch.  Designed by owner Vol Montgomery, as a place where you can enjoy activities away from the hustle and bustle of the city but not give up all of the conveniences.  The central feature is a large pavilion with ponds, pools, a commercial kitchen and a bar, perfect for any company sponsored function.  It overlooks a manmade lake stocked with bass and pearch so the fishing is active and the fish are large.  The fact that the Ranch operates a hook and release program and also feeds the fish makes them larger than you might find in a natural lake – of course this is Texas and we only have one natural lake so who cares.  This is a mecca for mountain bikers with miles of trails with different skill level challenges.  There are walking and hiking trails with a new nature center under construction.  Kayakers and paddle boarders will also enjoy the small lake which has trees sticking up from the depths to add to the paddling practice.

Tent Campsite
Tent Campsite

The Ranch also has camp sites scattered around the pavilion area that prneude for tent camping or RV camping with electrical hook-ups for both 30 amp and 15 amp hook-ups.  There are warm and cold water showers for both and toilet facilities near the Pavilion so you don’t have to go too native.  The staff at the Ranch are on hand to help you find your way or to make suggestions.  Andrea is the diving coordinator for the Ranch with John, a former mountain biking circuit rider, is on hand to help coordinate things.  Vol is also on the property to make sure things run smoothly.

The Ranch staff can also host other activities for groups including skeet shooting, children’s activities and obstacle course events. 

While there are some motels and guest cabins nearby, our group of explorers, which dwindled from twelve to six, all stayed and camped at the Ranch.  Ann loves camping so this was just up her alley.  Of course I am not really a tent camper anymore so my solution was to rent a small teardrop camper from a local dealer here in Houston.  It turned out to be the perfect match for the weekend with a comfortable bed and a nice place to prepare food.  Remember our motto here at Oceanic Ventures – local diving is a Barbeque interrupted by diving and as David likes to say, it is all about the food.  Wade brought steaks, potatoes and fresh cord for Saturday’s post dive dinner and I brought two nice bottles of wine to go with it.  I also had a surprise – homemade ice cream, made on site.  Of course it was not the most appropriate dessert because the temperatures dropped to a brisk 48 degrees.  But in my mind, ice cream is perfect any time.  We built a nice fire and shared dive stories and adult beverages until one-by-one we began to fade and drift off to sleep.

The scenery of the Ranch make this a perfect escape for divers and non-divers alike.  The diving, while cold, was interesting and fun.  The geology underwater is interesting with the graphite seams in the formations sparkling in the light.  Navigation is easy since the quarry runs north to south and there are no known caves or major overhangs.  Surface intervals are relaxing with a deck near the campsite or on the floating dock.  There are also hiking trails around the quarry if you feel you need more exercise.

One note for divers – the quarry is not open to the public.  To dive here you must go with a dive store, like your friends at Oceanic Ventures. 

Dive Mom's Birthday BashHow did we enjoy the weekend?  Well, Oceanic Ventures has decided to throw Dive Mom and birthday bash up at Reveille Peak Ranch on 26-28 April 2013 (i.e. this coming April).  Everyone is invited to the party and if you are interested in renting a teardrop trailer contact Charlie at hitchandgoadventures.com ahead of time and let him know you what one just like ours (we have already put in a reservation).  But don’t worry; Steve Soulen will be coordinating the tent campers and the ever present campfire! 

So, mark your calendars for April 26-28 and plan on joining us for a VERY fun weekend!

See More Photos from the weekend on our Facebook Fan Page or by clicking here.

by

Study Indicates Some Sharks Are Color Blind

Wobblegong Shark
Spotted Wobblegong Shark.
Copyright (c) 2005 Richard Ling

A recent study by a group of Australian scientists has suggested that wobbegong sharks are color blind! Past studies that have tested color-sensing abilities in elasmobranchs (rays, skates, and sharks) have shown that some rays have color-vision, but it was believed that sharks were probably colorblind. This has now been proved in two species of wobbegong sharks and indicates the possibility of colorblindness in all sharks. But more species will have to be tested before conclusions can be drawn for more sharks.

The study looked at light-sensitive proteins in the light-sensing cells in the retina of wobbegong shark eyes. Different types of these light-sensing proteins, opsins, are used to detect various types of light and convert them into photoelectric signals. Animals usually need two types of opsins in order to have any color-vision. It was found that the two species of wobbegongs studied had only one cone opsin, concluding that their vision is colorblind. Many fish and other marine animals have color vision but this trait seems to be lost for certain types of whales, seals and dolphins, and it is unknown why large marine predators lost multiple opsins in their retina, and thus color vision. This new knowledge about wobbegong color sensitivity could have broader indications that many sharks are colorblind. This has important implications for the scuba, surfing and fishing industries, which can use this research to make their products less visible to sharks to promote diver, swimmer and surfer safety and make fishing lures that are more difficult for sharks to see in order to reduce shark by-catch!

by

Explore the Ocean with Google Maps!

Google Map from APO IslandSome of the newest technology related to diving has come in a form strictly for surface use, as Google Maps has recently expanded their Google Street View to the ocean and gone underwater to capture panoramas and videos of reefs around the world! Google Street View is an interactive program that allows users to virtually navigate streets, museums, and famous sites world-wide but has previously stayed on land. Google has teamed up with the Caitlin Seaview Survey to create images of 360o views of reefs, which will make phenomenal images of reefs and virtual tours of popular dive sites available to billions of people who have never experienced the underwater world.  

Google hopes to make these dive sites accessible to users to promote interest and conservation of the ocean and the images will be added to an archive for marine scientists to use for studies of these marine environments. From September to December the project will travel down the coast of Australia taking thousands of images that will be continually uploaded new sites to Google Maps. Currently there are six sites available to view on Google Maps, including three sites at the Great Barrier Reef in Australia, two sites in Hawaii, and one of Apo Island in the Philippines.  

This is especially exciting for me because I have been lucky enough to dive Apo Island on an Oceanic Ventures trip and it is so cool navigate those sites via the internet! Although these images are amazing, they pale in comparison to the true underwater world of Apo Island. So, although Google cannot quite compare to really experiencing Apo Island, they’re making great strides forward and making dive sites more accessible to non-divers and divers interested in previewing sites in a sustainable way! 

You can see what I mean by going here.

by

Trip Report – Live Aboard Scuba Diving in Belize

Belize Adventurers Photo
The group aboard the Belize Sun Dancer

The Belize Sundancer Adventurers are on their way back to Houston, they are all sad to see their week of fun and adventures being replaced by emails and text messages.  (@#$%& Internet).  But despite the return of reality.  the trip was awesome with 26 dives, and over 35 hours of bottom time for all!!!

Looking back on the week there were some fun things and some memorable notes.  Karen loved her new second strobe, Steve loved his new strobe and tey both have the photos tp [rpve it.  Mike promised to have an awesome YouTube video for us of fish and divers including a feeding octopus on one of the night dives. ( You will have to wait for a future post to see this one — video takes a little time to assemble.)

 Zaide once again ran out of socks to lend everyone…thanks Z!!! (Alex will be stocking up on socks so everyone can have a pair.)  Gordon helped the new divers find their way back to the boat so they could lose track of boat “bus” stop and just enjoy the fish while Kris helped refresh Ann’s memory by looking in her logbook to see if they were correct that they had met the Cpatain, Eddy, on a past trip when he was the dive master of the Bay Island Aggressor when it was moved to Belize especially for our group.

Thinking about Half Moon Wall I found it even more beautiful than I remembered it from my last dive here in 2003.  Sofie arrived with only 6 dives and became an Advanced Open Water Diver on the trip!! Congratulations Sofie!!!  Steve completed his 100th  dive and Bill his 300th dive.  And speaking of Bill, he & Debbie learned to really like their new full face masks.  Bill was even hear to comment that Debbie did not talk as much as he thought she would but he was happy for the communications device when the shark went by; Bill didn’t miss it while he was taking photos of blennies.

Barbara and Barney were first in the water on all of the  dives save for one and met their goal of photographing spotted eagle rays.  Rich was awarded the best buddy for a photographer and he and Steve prompted Ann to offer a Marine Life Id course while on board.

Two cylinder man, John, and Sharkbait Karen were able to finish Ann’s fish-id check list on one dive, at 30 feet under the boat without mneung more than two feet.  Great Lion Fish Hunter Jess assisted by Mike suggessfully removed 35 lionfish from the reefs.  Steve commented that there were more little fish this year and less lion fish.  An autompsy of the lionfish showed why….their favorite meals were sergeant majors, juvineele runners, and gobies.

Chef Jerry feed us wonderful local Belzian dishes, fresh fish or stuffed pork chops, peanut butter chocolate chips bars, fluffy rich cheese cake, and even turkey dinner.  Karim, John Eddie and Jerry lead the dives, photographed the fish and the guests, and waited at the ladder for up to an hour for each guest to get out of the water after leading dives just to help take off our fins and hand up equipment.  Waiting at the “bus stop” for the hang bar to swing was almost as much fun the ride the bar for the safety stop.

The comment after tubing sums up the week: “Where are we going next year?”   This says it all…great time, good friends, aweomse crew, memorable vacation.

My only comment is why wait until next year?