Read any authority’s advice about blogs and you’ll see at the top of the list: “Blog regularly.” Even for someone who enjoys writing as much as I do, I don’t believe in writing for writing’s sake — I like to share original experiences and ideas, not just rehash stale news. Still, I’ve experienced quite a few blog-worthy adventures in the four months since my last post shortly after the Bering Sea Expedition, but haven’t written a single word. [Read more...]
BERING SEA, Alaska — This past summer, the Greenpeace ship M/V Esperanza carried two manned submersibles, a remotely-operated vehicle (ROV) and an international research team to the Bering Sea for a three week survey of Zhemchug and Pribilof Canyons,to map and document deepwater corals living at depths of more than 1,000 feet. The expedition was conceived of and was led by Greenpeace. 1planet1ocean president David E. Guggenheim participated as a sub pilot and scientific consultant. Pribilof and Zhemchug Canyons revealed diverse and complex ecosystems, rich with corals, sponges, fish and other marine life. They also revealed striking human impacts from trawlers, damage that was documented during the expedition. More than a terabyte of video data and numerous biological specimens are now being analyzed and results are being shared with a range of decisionmakers and decisionmaking bodies, including the North Pacific Fisheries Management Council.
With a Terabyte (1,000 Gigabytes) of high-definition video, photographs and other data, along with numerous biological samples, now making their way around the world to scientists, policymakers and public forums, new insights and perspectives are emerging as the hard work of reviewing this vast volume of new data moves forward. The science team and sub pilots have departed Esperanza, which is continuing west along the Aleutian Island chain, continuing important outreach to local communities. The ship will eventually continue west to Japan.
Before departing Dutch Harbor, the science team/sub pilots made the first public presentation of its findings, including imagery and videos, to the community of Unalaska. The following day, members of the community were invited aboard Esperanza during an Open House to meet with the crew and see the ship up close.
Though the at-sea portion of the expedition has concluded, much work lies ahead in the analysis and review of the information collected. In addition, planning is underway for events to bring the new imagery and insights to the public, so stay tuned. Also, the team continues to review chart data regarding the pinnacles reported to be in the Zhemchug Canyon area which purportedly rise within 20 feet of the surface. Such features would certainly be biologically important, so the search will continue.
Pribilof and Zhemchug Canyons revealed diverse and complex ecosystems, rich with corals, sponges, fish and other marine life. They also revealed striking human impacts from trawlers, damage that was documented during the expedition. For a reflection on the conclusion of the expedition, read David Guggenheim’s latest OceanDoctor blog post entitled, “A Sea Turtle is Born in Alaska.”
The Esperanza carried two manned submersibles, a remotely-operated vehicle (ROV) and an international research team to the Bering Sea for a three week survey of Zhemchug and Pribilof Canyons,to map and document deepwater corals living at depths of more than 1,000 feet. The expedition was conceived of and was led by Greenpeace. [Read more...]
Location of Pinnacles Remains a Mystery
The Esperanza began its 2-day steam south and endured gale-force winds and 15-foot seas along the way, but all are well and grateful for the successes along the way. The team achieved a total of 25 sub dives during the expedition, well-exceeding expectations for this part of the world where weather is typically unforgiving.
The team collected nearly a Terabyte (1,000 Gigabytes) of high-definition video, photographs and other data, now being archived, cataloged and distributed. Also collected were numerous coral, sponge, and other invertebrate samples which are being prepared for distribution to scientists around the world for further analysis. [Read more...]
Before rough seas rolled in on Tuesday, the team aboard Esperanza was able to complete six manned submersible dives and three ROV dives at Zhemchug Canyon, considered the largest canyon in the ocean. The subs worked close to their maximum depth of 2,000 feet while the ROV worked at its deepest depth ever, around 3,000 feet. Numerous coral species were present and documented throughout the dives.
Zhemchug Canyon has also revealed an intricate ecosystem whose inhabitants depend upon small holes or rises in the otherwise flat, silty bottom, including “flatfish holes,” depressions made by halibut, flounder, sole and skates, and drop-stones, rocks and boulders that fall from melting icebergs above. Read more about this unique place on David Guggenheim’s OceanDoctor blog. [Read more...]
Continued favorable weather and few mechanical problems means that the team aboard Esperanza has been able to complete 14 manned submersible dives at Pribilof Canyon. On Saturday (August 4), Esperanza arrived at Zhemchug Canyon to explore this, the largest undersea canyon in the world, much larger than the Grand Canyon. Within the first few minutes of the deepest ROV dive yet, more than 3,000 feet down, the team discovered corals, including pink “bubblegum” corals along with other soft corals.
Earlier, during the final dives at Pribilof Canyon, the team documented numerous corals, but also evidence of extensive trawling damage in the area.
The Esperanza is carrying two manned submersibles, a remotely-operated vehicle (ROV) and an international research team to the Bering Sea for a three week survey of Zhemchug and Pribilof Canyons,to map and document deepwater corals living at depths of more than 1,000 feet. The expedition was conceived of and is being led by Greenpeace.
Earlier in this blog I’ve confessed my darkest secret as a marine scientist: I get seasick. So my biggest fear of the Bering Sea is what the Bering Sea is fond of doing often — getting rough with the boats that dare to ply its waters. Yesterday, things got a bit rough for the Esperanza. A major front pushed through and seas kicked up from nearly flat to a confused sea state — wind-driven waves 4-5 feet heading one direction, a much larger swell, Penny the boatswain noting swells up to 12 feet, heading at a 45 degree angle. The result made for a rough ride. Awakened at 4am, I dashed up to my hideout, the video editing room, to make sure that our precious data stored inside several hard drives, were secured. I added some bungee to keep things from sliding. I tried to return to sleep, but it was fitful. [Read more...]
Thanks to great weather, state-of-the-art equipment and a top-notch crew, it has been a productive weekend for the team aboard Esperanza which arrived on site at Pribilof Canyon Saturday morning (July 28) when David Guggenheim and Michelle Ridgway made the first tandem dive in two DeepWorker submarines into Pribilof canyon to a depth of just over 1,000 feet and began to document a fascinating diversity of life, including a variety of corals, anenomes, sponges and fish. On Sunday, the ship visited a second site in Pribilof Canyon where John Hocevar and Timo Marshall completed a successful tandem dive, documenting more corals and successfully collecting a number of specimens with DeepWorker’s manipulator arm for analysis by scientists around the world.
Already, the Greenpeace-led team has accumulated nearly 16 hours of bottom time (8 hours per sub), more than all of the previous research done in this region combined. The subs’ high-definition video cameras have already collected over 120 Gb of data. The subs are performing linear transects which will then be analyzed on the video. Twin lasers spaced 20 cm apart allow accurate analysis of the size of organisms encountered. [Read more...]
The Expedition to the Bering Sea officially got under way as the M/V Esperanza departed Dutch Harbor, Alaska on Friday, July 27 at 4pm Alaska Daylight Time. The Esperanza will steam through the night — for roughly 15 hours — to its first destination, Pribolof Canyon near the Pribolof Islands in the Bering Sea. The first DeepWorker dives are scheduled for Saturday morning.
In June, an international team of researchers and conservation specialists recently completed a week of intensive training and preparations for this Greenpeace-led expedition to Alaska’s Bering sea. The Esperanza is carrying two manned submersibles, a remotely-operated vehicle (ROV) and the research team to the Bering Sea for a three week survey of Zhemchug and Pribilof Canyons, specifically to map and document deepwater corals living at depths of more than 1,000 feet. [Read more...]
As a young teenager, I finally got my wish: Scuba lessons for my 15th birthday! My lessons were in a moldy YMCA pool in suburban Philadelphia, and my first open water dive — my checkout dive — was in a quarry in Reading, Pennsylvania in the balmy month of December. Air temperature 36 degrees F, water temperature 40 degrees. My wetsuit was too big, was full of holes, and to this day I don’t think I’ve ever been so cold. In those primitive days of the early 70s, we didn’t use buoyancy compensators (BCs), vests that you can fill with air from your tank to keep you afloat at the surface or keep you neutrally buoyant at depth. Rather, we used “horse collar” safety vests — virtually identical to what the flight attendant demonstrates the use of for the “unlikely event of a water landing.” [Read more...]