Exploration of Pribilof Canyon Now Under Way, Revealing Rich Ecosystem, Corals

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. Read more

Esperanza Sets Sail from Dutch Harbor: Bering Sea Expedition Under Way

DeepWorker submarines aboard Esperanza as the ship heads north into the Bering Sea, leaving the Aleutians behind. (Photo by David E. Guggenheim)

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