Today is the day we think about the ones we love. At Oceanic Ventures, we want to thank everyone who helps us introduce others to the exciting world underwater and to the world of adventure around us. 2014 will be an exciting year here at the dive store. We have some incredible trips planned for 2014 including Grand Cayman, Cozumel, Truk Lagoon, Kosrae and Fiji. We hope that everyone will make this their year of adventure! Come let us open up the door for you.
Diving in the Solomon Islands – Guadalcanal
The morning finds is on our first diving location. Diving off the Bilikiki is done primarily off the “tinies,” aluminum boats with cylinder holes and a small ladder. Csaba (pronounced Chaba) was in charge of the first dive and after the briefing it was – this way to the South Pacific and Tinie 1, Tinie 1 as the crew moved the diving equipment from the deck to the tinie. The order was the same each day, diving equipment, cameras then divers. All you as a diver needed to do was to let the crew members know that you were ready, move your name tag from “on-board” to “diving” and then step aboard your waiting diving chariot.
The adventure continues…
Beginning in the Solomon’s
Let’s just get this over with at the beginning. The Bilikiki is an old vessel that is not as well appointed as many other modern live aboard diving and touring vessels. The dining area has plastic lawn chairs and the tables are simple. The main salon is not air conditioned and there is no wet head on the dive deck. But, the crew on this vessel is second to none. The newest member of the crew has only been on the vessel for two years but spent seven years on the Spirit of the Solomon’s, the sister ship to the Bilikiki. Most of the remaining crew members have been with the vessel for more than seven to twenty-years. The on-board diving managers have been here a year and come from extensive ship management in the Red Sea. Needless to say, they all know how to make your life aboard special!
Evan, the shore based manager met us at the airport and like the crew on board the boat, Evan has been a part of the operation for a long time (I can attest that he was here in 2006 when we last visited the Bilikki.) Amazingly, all of our luggage arrived with us and we were promptly taken to the Kitana Medano Hotel to wait for our time to board. To capitalize on our available time, Ann had arranged for a tour of Honiara and some of the sights that made Guadalcanal such a memorable location in World War II. There is a beautiful tribute to the men who died in the Pacific defending our freedom and bringing it to others. This war memorial sits atop a hill above Henderson field and has multiple marble carvings highlighting the battles in this region of the Pacific. So many men died here that the locals are still finding mess kits and other personal items scattered throughout the jungle.
The ships scattered on the bottom of Iron Bottom Sound even now contain the remains of American, Australian, British and Japanese sailors. The majority of these wrecks lie well beyond the range of recreational scuba divers in over 240 feet of water.
Our tour also encompassed Henderson field (we landed here), the river near Red Beach, and a stop at the statue of Sir Jacob Vouza, the Solomon Islander who alerted the allies to the advancing Japanese troops despite being tortured, stabbed and left for dead. He survived, was Knighted by the Queen of England and even renamed his village to California so he could tell his friends in America that he was in California.
As our tour ended, our diving adventure was about to begin. Csaba, on of the on-board boat managers met us at the hotel and transported us to the Honiara Yacht Club – a stuffy name for a simple location with small boats and a nice bar. Here we joined our luggage which had already been loaded by the crew. We were met by Daniela, the lively Venezuelan on-board manager. She is also married to Csaba and no, he is not from Venezuela but rather hails from Hungry and Eastern Europe.
The first day on a live aboard is always busy with everyone scurrying around trying to assemble their dive equipment which is scattered around various bags necessitated by the airline luggage rules. Only after everything is reassembled, tested and stored is there time to relax.
It was soon after dinner that the boat set sail for the beginning of our ten-day cruise through the Solomon Islands.
The adventure continues…
Scientists accidentally took a video of the elusive oarfish. This video is the best quality and longest video that has ever been shot of an oarfish in its natural habitat. This video also appears to show a parasitic isopod attached to the fish’s dorsal fin. The mysterious oarfish lives about a mile deep in the ocean and it can grow to be 50ft long. Oarfish look like giant eels, with their head pointing towards the surface and the rest of their body hanging down below. The oarfish is also believed to be the largest bony fish in existence. The one in this video is only eight feet long. This video was shot while researchers were investigating the BP oil spill in the Gulf of Mexico. A camera was sent down to look at the oil pipes and figure out how to fix them. However, the camera stumbled upon this oarfish.
Scientists were surprised to see the oarfish since it has rarely been seen in its habitat. Another reason why oarfish are rarely seen is because they live far offshore. The video of the oarfish can be viewed below. The best pictures of the fish are about 6 minutes into the video.
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 that “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 to 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!
This morning I was reading the NOAA Educational Newsletter and Kelly Drinnen, the coordinator for the Flower Gardens National Marine Sactuary and she had an interesting article on just what is coral. In it she writes “Steve Palumbi of Stanford University gives it his best shot with this great 3-minute Microdoc in which he explains that corals are, among other things, tiny animals that make skeletons big enough to be seen from outer space. We love this; it makes the underwater world a bit easier to understand, which we think is essential for conservation.” In the video, Dr. Palumbi explains coral and a coral reef using a coffee cup, a glass and a plumaria flower. He also cuts back to underwater scenes to demonstrate his points. I have to admit is is a very effective way to explain the nature of this small animal. You should watch it…it is only about 3 minutes long.
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.
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 provides 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 moving 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.
If you are interested in rebreahers, I think this unit is a good alternative for more capable and expensive rebreathers. It provides 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.
One of the world’s rarest animals, the spade-toothed whale, has now been seen for the first time in recorded history. A mother and calf beached and died in New Zealand earlier this week. Previously the only evidence that this species exists has been three bones pieces that have been found from the 1800s through the present. The bones were difficult to identify because although they were similar to other beaked whales, they did not fit any bone structures of known species. Originally many of the bones were tentatively identified as Gray’s beaked whale, which is within the same family as the spade-toothed whale. Now, after using mitochondrial DNA sequencing to compare the spade-toothed whale bones to Gray’s beaked whales showed that the bones were from a separate, unknown species, then termed the spade-toothed whale.
Whales of the beaked whale family (Ziphiidae) are amongst the most rarely seen whales and are one of the least known families. This is due to beaked whale’s ability to dive to extreme depths to find deep-sea fish and squid to eat. Beaked whales can dive over 800 meters deep and stay submerged for nearly an hour and half. Many beaked whales are rarely seen and many species are difficult to differentiate without close examination. Therefore, it is very exciting for scientists to finally be able to look closely at a spade-toothed whale to be able to fully differentiate them from other species. It is really incredible that for the first time ever-recorded humans are laying eyes upon a new species of whale. This is the final evidence to prove the current existence of this whale species, and even though we know much about the ocean, it is obvious we still have so much to learn.
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!