Ocean Doctor » international research team http://oceandoctor.org Ocean Conservation in Action - The Site of David E. Guggenheim, the "Ocean Doctor" Thu, 09 Feb 2012 15:23:34 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Ocean Conservation in Action - The Site of David E. Guggenheim, the "Ocean Doctor" Ocean Doctor no Ocean Conservation in Action - The Site of David E. Guggenheim, the "Ocean Doctor" Ocean Doctor » international research team http://oceandoctor.org/wp-content/plugins/powerpress/rss_default.jpg http://oceandoctor.org Esperanza Now at Zhemchug Canyon, Largest Underwater Canyon in the World http://oceandoctor.org/esperanza-now-at-zhemchug-canyon-largest-underwater-canyon-in-the-world/ http://oceandoctor.org/esperanza-now-at-zhemchug-canyon-largest-underwater-canyon-in-the-world/#comments Sat, 04 Aug 2007 03:01:57 +0000 Ocean Doctor http://1planet1ocean.org/?p=28
The Esperanza crew had an opportunity for a brief shore leave on St. Paul Island on Friday (August 3) before steaming north to Zhemchug Canyon. On St. Paul, they visited a fur seal rookery. Populations of fur seals are down dramatically.
(Photo by David E. Guggenheim)

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. Read David Guggenheim’s account in his OceanDoctor blog.

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.

 

 
]]> http://oceandoctor.org/esperanza-now-at-zhemchug-canyon-largest-underwater-canyon-in-the-world/feed/ 0 Exploration of Pribilof Canyon Now Under Way, Revealing Rich Ecosystem, Corals http://oceandoctor.org/exploration-of-pribilof-canyon-now-under-way-revealing-rich-ecosystem-corals/ http://oceandoctor.org/exploration-of-pribilof-canyon-now-under-way-revealing-rich-ecosystem-corals/#comments Mon, 30 Jul 2007 10:52:40 +0000 Ocean Doctor http://1planet1ocean.org/?p=29
Deepwater corals, like this sea whip (Halipteris willemoesi) photographed on Sunday by Timo Marshall, thrive in the deep waters of Pribilof Canyon

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.

John Hocevar (Greenpeace Senior Oceans Specialist) pilots DeepWorker at 1,100 feet in Pribilof Canyon
(Video still by Timo Marshall – 29 July 2007)

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.

The tumbling anenome, Liponema brevicornis, photographed here by David E. Guggenheim on Saturday, July 27 at a depth of 620 feet in Pribilof Canyon (The two red dots are from onboard lasers used to assist in estimating size. The lasers are 20 centimeters apart.)



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.

 

 

 
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