Expedition Log

04.24.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 9

Rich biodiversity at Pescadero Basin Yossellin Tapia De la O writes: Today we returned to Pescadero Basin, which is, undoubtedly, an exceptional place that we had to revisit with its active chimneys and mounds, and the rich biodiversity they nourish. During the survey with the ROV, we were often very close to colonies of Riftia or Oasisia, and …

Expedition Log

04.24.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 8

Returning to hydrothermal vents at Pescadero Basin Bob Vrijenhoek writes: Today we finished the last dive of Leg 6. It was a productive day and it started somewhat auspiciously. The wind was blowing close to 20 knots at 6:00 a.m., just before launch time. Would it increase or decrease during the next half hour? Luckily for …

Expedition Log

04.23.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 7

Vesicomyid clams Elena Krylova writes: Vesicomyid clams are conspicuous and consistent members of hydrothermal vent and hydrocarbon seep communities worldwide. Nevertheless, they remain one of the most poorly understood bivalves. Two vesicomyid species were described from the Gulf of California by the American mollusc expert William Healey Dall more than 100 years ago. Those clams …

Expedition Log

04.22.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 6

Vent communities at Alarcón Rise and Glitter Lake Kris Walz writes: Today is Earth Day, a perfect day to be afloat on the surface of the ocean, exploring the deep-sea communities thousands of meters below. Over 70 percent of Earth’s surface is covered by oceans making the seafloor one of the world’s largest habitats. Covering …

Expedition Log

04.21.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 5

Hydrothermal vents at Alarcón Rise Corinna Breusing writes: 6 a.m.: Time to get up to watch the launch of the ROV Doc Ricketts in 30 minutes. It will take about 1.5 hours for the ROV to reach the seafloor and allow us to take another glimpse at the mysterious world of deep-sea vents in the Gulf of California. …

Expedition Log

04.20.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 4

Plumes of black smoke Shannon Johnson: Today was an amazing day of exploration and discovery at one of the most exciting natural habitats of the deep sea—black smokers. We explored enormous hydrothermal vent chimneys, majestic columns eight to 37 meters tall, emitting voluminous plumes of black smoke. The chimneys were covered with dense thickets of …

Expedition Log

04.19.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 3

Mounds and chimneys in Pescadero Basin Greg Rouse writes: Today we returned to Pescadero Basin to continue exploring the active mounds and chimneys in the area at 3,700 meters depth and to document and collect various animals. These biological collections are important as they will allow us to compare vent systems further south on the …

Expedition Log

04.18.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 2

Riftia, the Reigning Queen Verena Tunnicliffe writes: Nestled in a very deep valley in the Gulf of California lies what we’ve called the “Mermaid Castle” where tubeworms and anemones sway in the wafting warm waters. Well, it did look a bit like a fantasy land to us! So close to land, the seafloor slumps to …

Expedition Log

04.17.15

Gulf of California 2015, Leg 6 – Vents and Seeps

The goal of this leg is to sample benthic animals from deep-sea hydrothermal vents and hydrocarbon seeps in the Gulf of California. The sample benthic specimens will be used for taxonomic purposes to establish depth and geographical ranges of individual species, and for population genetic studies of connectivity along the western margin of North and …

Expedition Log

04.17.15

Gulf of California 2015, Leg 6 – Vents and Seeps – Log 1

Lines all clear Shana Gofffredi writes: At 7:03 AM, we set sail on a cool overcast day from La Paz, Mexico, aboard the R/V Western Flyer. The 10 scientists onboard all specialize in various aspects of deep-sea biology, ecology, evolution, taxonomy, and microbiology. The main goal for the expedition is to explore newly discovered deep-sea hydrothermal …